HYUNDAI D4DD - Fault Codes List. DTC

DTC

Malfunction

Description

Symptoms

Probable causes

P0088

Common Rail pressure exceeds permissible values.

The pressure sensor is installed on the rail and is used to measure the pressure in the high pressure circuit. Used by the ECM (engine control module) to control the pressure regulator. When the pressure in the fuel rail is 2000 bar or more, a fault code is set. If the distributor pressure is normal and the sensor shows a voltage higher than 4.2 V to the ECM, a DTC will set.

Power loss, pressure limitation to 400 bar, fuel quantity limitation to 60 mm³ / st.

High pressure, pressure limiting valve defective, pressure sensor defective.

P0093

Leakage in the fuel system.

The rail pressure sensor must sense the instantaneous tire pressure to transmit a voltage signal commensurate with the pressure applied to the ECM. When a leak occurs from the high pressure system, the sensor signal is sent to the ECM and a DTC is set.

The engine stops.

Fuel leak from high pressure system, pressure sensor defective.

P0107

Barometric pressure sensor, low voltage.

The barometric pressure sensor is located in the ECM and is used to detect changes in atmospheric pressure. The barometric pressure sensor measures the atmospheric pressure, converts it to voltage and sends a signal to the ECM. Used to compensate for the correct amount of fuel injected when driving in high altitudes. If the sensor's output voltage is below 1.9 V., a DTC will set. In this case, the ECM sets the atmospheric pressure to 101.3 kPa as the setpoint.

Loss of power, black smoke while driving in the highlands.

Defective barometric pressure sensor built into the ECM.

P0108

Barometric pressure sensor, high voltage.

The barometric pressure sensor is located in the ECM and is used to detect changes in atmospheric pressure. The barometric pressure sensor measures the atmospheric pressure, converts it to voltage and sends a signal to the ECM. Used to compensate for the correct amount of fuel injected when driving in high altitudes. If a sensor output voltage higher than 4.3V is detected, a DTC will set. In this case, the ECM sets the atmospheric pressure to 101.3 kPa as the setpoint.

Loss of power, black smoke while driving in the highlands.

Defective barometric pressure sensor built into the ECM.

P0112

Intake air temperature sensor (IATS) low voltage.

The intake air temperature sensor is installed on the intake manifold and is combined with the charge air pressure sensor. Used to adjust the injection time and the amount of fuel injected. If the output voltage of the intake air sensor is detected by the ECM below 0.1 V. A DTC will set.

Loss of power, black smoke.

The intake air temperature sensor is faulty, the wiring is damaged, a short circuit to terminal 32 of the ECM (M992).

P0113

Intake Air Temperature Sensor (IATS) High Voltage.

The intake air temperature sensor is installed on the intake manifold and is combined with the charge air pressure sensor. Used to adjust the injection time and the amount of fuel injected. If the output voltage of the intake air sensor is detected by the ECM above 4.5 V., a DTC will set.

Loss of power, black smoke.

The intake air temperature sensor is faulty, the wiring is damaged, a short circuit to terminal 32 of the ECM (M992).

P0117

Coolant temperature sensor (ECTS) voltage low.

The coolant temperature sensor is located on the coolant passage of the cylinder head. Used to control injection timing, adjust the amount of fuel injected and automatically turn on the fan. A faulty coolant sensor affects cold starts and is one of the factors that can cause white smoke when starting the engine. If the sensor's output voltage is lower than 0.1 V., a DTC will set.

Loss of power, white or black smoke, engine overheating.

Defective coolant temperature sensor, damaged wiring, short circuit at terminal 19 of the ECM.

P0118

Coolant temperature sensor (ECTS) high voltage.

The coolant temperature sensor is located on the coolant passage of the cylinder head. Used to control injection timing, adjust the amount of fuel injected and automatically turn on the fan. A faulty coolant sensor affects cold starts and is one of the factors that can cause white smoke when starting the engine. If a sensor output voltage higher than 4.92V is detected, a DTC will set.

Loss of power, white or black smoke, engine overheating.

Defective coolant temperature sensor, damaged wiring, short circuit at terminal 19 of the ECM.

P0120

Accelerator pedal sensor # 1, not open.

Electronic injection control is carried out by the ECM using the obtained coefficients from the various components. The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. If the accelerator pedal position sensor shows an idle state when the car is accelerating (idle switch is off) and accelerator pedal sensor # 1 outputs a voltage of 0 to 5 V., while sensor # 2 outputs 5.1 V. or more, a malfunction code is registered.

Defective accelerator pedal sensor or wiring.

P0121

Accelerator pedal sensor # 1, not closed.

Electronic injection control is carried out by the ECM using the obtained coefficients from the various components. The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. If the accelerator pedal position sensor shows an idle state when the car is accelerating (idle switch is off) and accelerator pedal sensor # 1 outputs a voltage of 5.1 V. or more, while sensor # 2 outputs from 0 to 5.0 V ., a malfunction code is recorded.

Defective accelerator pedal sensor or wiring.

P0122

Accelerator pedal sensor # 1, low signal.

Electronic injection control is carried out by the ECM using the obtained coefficients from the various components. The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. When the output from the accelerator pedal sensor # 1 is below 0.5 V., a DTC is set.

When the accelerator pedal sensor # 1 is faulty, the ECM is controlled by the sensor # 2, the vehicle control is returned to normal.

Defective sensor, damaged wiring, terminal 21 of the ECM is open.

P0123

Accelerator pedal sensor # 1, high signal.

Electronic injection control is carried out by the ECM using the obtained coefficients from the various components. The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. When the output from the accelerator pedal sensor # 1 is higher than 4.2 V., a DTC is set.

When the accelerator pedal sensor # 1 is faulty, the ECM is controlled by the sensor # 2, the vehicle control is returned to normal.

The sensor is faulty, the wiring is damaged.

P0182

Fuel temperature sensor, low signal.

The fuel temperature sensor is installed on the right side of the fuel pump, measures the fuel temperature, sends a signal to the ECM to adjust the amount of fuel injected on a hot or cold engine. When the output from the fuel temperature sensor is below 0.15 V., a DTC is set.

Depending on the temperature of the fuel, loss of power and black smoke may occur.

Defective sensor, damaged wiring, short circuit at terminal 27 of the ECM.

P0183

Fuel temperature sensor, high signal.

The fuel temperature sensor is installed on the right side of the fuel pump, measures the fuel temperature, sends a signal to the ECM to adjust the amount of fuel injected on a hot or cold engine. When the output from the fuel temperature sensor is higher than 4.85 V., a DTC is set.

Depending on the temperature of the fuel, loss of power and black smoke may occur.

The sensor is faulty, the wiring is damaged.

P0192

Common Rail high pressure sensor, low signal.

The pressure sensor is installed on the rail and is used to measure the pressure in the high pressure circuit. Used by the ECM (engine control module) to control the pressure regulator. If the signal from the pressure sensor is below 0.7 V., a DTC is set.

Power loss, pressure limitation to 450 bar, fuel quantity limitation to 63 mm³ / st.

The sensor in the line is faulty, the wiring is damaged, a short circuit on contacts 20, 25, 31 on the contacts of the ECM unit.

P0193

Common Rail high pressure sensor, high signal.

The pressure sensor is installed on the rail and is used to measure the pressure in the high pressure circuit. Used by the ECM (engine control module) to control the pressure regulator. If the signal from the pressure sensor is higher than 4.7 V., a DTC will set.

Power loss, pressure limitation to 450 bar, fuel quantity limitation to 63 mm³ / st.

The sensor in the line is faulty, the wiring is damaged.

P0194

Common Rail high pressure sensor interrupt.

The pressure sensor is installed on the rail and is used to measure the pressure in the high pressure circuit. Used by the ECM (engine control module) to control the pressure regulator. When the voltage of the line sensor sensor is less than 0.0001 V., while the line pressure is 200 bar higher than the actual pressure or less than 0.0001 V when the engine is starting, and the difference between the actual pressure is more than 200 bar after the engine is started, malfunction code.

Loss of power as fuel supply is limited.

Malfunction of the output value of the sensor. Check the output value of the sensor in the line.

P0195

Common Rail high pressure sensor, signal offset.

The pressure sensor is installed on the rail and is used to measure the pressure in the high pressure circuit. Used by the ECM (engine control module) to control the pressure regulator. The purpose of diagnosing an excessive line pressure bias is a function that allows the engine to start when the fault is stable due to the signal bias. If the vehicle is driven with an offset common rail pressure and then the engine stops, the ECM sees this and compensates for the moment to start the engine. The ECM considers this to be a malfunction and sets a DTC. Offset pressure means that the voltage at the pressure line sensor is out of a certain range. Offset state: 0.75 V (15.625 MPa) <Line pressure voltage (VPC) <1.25 V (15.625 MPa). The time of temperature drop is determined, which elapsed from the moment of stopping the engine until the vehicle was set in motion. Condition elapsed time: The current temperature between the previous shutdown and power-up of the ECM is less than 15 degrees. When the temperature difference is greater than 15 degrees and the line pressure sensor output voltage is less than 0.75 V. or greater than 1.25 V. for 2.048 seconds or more, a DTC will set. Conditions for diagnostics P0195: engine speed is less than 10 rpm, a working battery, the coolant temperature is above 7 degrees, the fuel temperature is above 7 degrees, the sensors are working properly, enough time has passed (the coolant temperature difference is 15 degrees).

The ECM controls the total line pressure below 100 MPa.

Defective line pressure sensor, poor contact in the connector. Check the output value of the sensor in the line.

P0196

Common Rail high pressure sensor, signal torque bias.

If the output voltage of the pressure sensor is less than 0.02 V. for 2.048 seconds, a DTC will set. Conditions for diagnostics P0196: engine speed is less than 10 rpm, battery is in good condition, coolant temperature is above 7 degrees, fuel temperature is above 7 degrees, sensors are working properly.

The ECM controls the total line pressure below 100 MPa.

Defective line pressure sensor, poor contact in the connector. Check the output value of the sensor in the line.

P0201

Injector 1, open circuit of the solenoid coil.

If the angle of rotation of the crankshaft is 4.4999 degrees or more, under the condition of an open circuit in the injector 1 circuit, a DTC is set.

Loss of engine power as fuel supply is limited. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal # 2 of the ECM connector (C10-2), open circuit in the injector coil, damaged wiring.

P0202

Injector 2, open circuit of the solenoid coil.

If the angle of rotation of the crankshaft is 4.4999 degrees or more, under the condition of an open circuit in the injector 2 circuit, a DTC is set.

Loss of engine power as fuel supply is limited. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal No. 2 of the ECM connector (C10-1), open circuit in the injector winding, damaged wiring.

P0203

Injector 3, open circuit of the solenoid coil.

If the angle of rotation of the crankshaft is 4.4999 degrees or more, under the condition of an open in the injector circuit 3, a DTC is set.

Loss of engine power as fuel supply is limited. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal # 1 of the ECM connector (C10-1), open circuit in the injector winding, damaged wiring.

P0204

Injector 4, open circuit of the solenoid coil.

If the angle of rotation of the crankshaft is 4.4999 degrees or more, provided that the injector circuit 4 is open, a DTC is set.

Loss of engine power as fuel supply is limited. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal No. 3 of the ECM connector (C10-2), open circuit in the injector winding, damaged wiring.

P0217

The coolant temperature is too high.

The coolant temperature sensor is located on the coolant passage of the cylinder head. Used to control injection timing, adjust the amount of fuel injected and automatically turn on the fan. A faulty coolant sensor affects cold starts and is one of the factors that can cause white smoke when starting the engine. If the coolant temperature is 115 degrees or more, a malfunction code is set.

Loss of engine power, as the fuel supply is limited, the warning lamp comes on.

Malfunctions in the engine cooling system.

P0219

Engine overspeed mode.

The position of the engine pistons is used to determine when the fuel is injected. After the crankshaft position sensor detects the piston position, it sends a signal to the ECM to determine the injection timing and engine speed. The camshaft position sensor is used to detect the top dead center of the compression stroke of each cylinder. Based on these signals, the ECM determines the fuel injection timing and injection order for each cylinder. If the engine speed is more than 4000 rpm in 97.6 ms, a DTC will set.

Fuel injection restriction to prevent engine damage.

Malfunction of the crankshaft position sensor.

P0220

Accelerator pedal sensor # 2, not open.

The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. The pedal position sensor indicates the idle speed during vehicle acceleration. When accelerator pedal position sensor # 2 outputs a voltage between 0 and 5.0 V. while sensor # 1 outputs 5.1 V. and higher for more than 1048.6 ms, a DTC is set.

When the accelerator pedal sensor # 2 is faulty, the ECM is controlled by the sensor # 1, the vehicle control is returned to normal.

The sensor is faulty, the wiring is damaged.

P0221

Accelerator pedal sensor # 2, not closed.

The accelerator pedal position sensor does not indicate an idle state when the vehicle is not accelerating. When accelerator pedal sensor # 2 outputs a voltage above 5.1 V. while sensor # 1 outputs 0 to 5.0 V. and above for more than 1048.6 ms, a DTC is set.

When the accelerator pedal sensor # 2 is faulty, the ECM is controlled by the sensor # 1, the vehicle control is returned to normal.

The sensor is faulty, the wiring is damaged.

P0222

Accelerator pedal sensor # 2, low signal.

When the output from the accelerator pedal sensor # 2 is below 0.5 V., a DTC is set.

When the accelerator pedal sensor # 2 is faulty, the ECM is controlled by the sensor # 1, the vehicle control is returned to normal.

The sensor is faulty, the wiring is damaged.

P0223

Accelerator pedal sensor # 2, high signal.

When the output from the accelerator pedal sensor # 2 is higher than 4.2 V., a DTC is set.

When the accelerator pedal sensor # 2 is faulty, the ECM is controlled by the sensor # 1, the vehicle control is returned to normal.

The sensor is faulty, the wiring is damaged.

P0225

The idle switch is closed.

If within 1048 ms. or more, the idle switch has not worked, even if it is activated, a malfunction code is set.

Stuck switch, malfunction in the ECM, damaged wiring.

P0226

The idle switch is open.

If within 1048 ms. or more, the idle switch has tripped, even if it is not operated, a fault code is set.

Stuck switch, malfunction in the ECM, damaged wiring.

P0236

The boost pressure sensor is not working properly.

The engine control module (ECM) must constantly monitor the exact amount of air that is entering the engine in order to determine the amount of fuel injected into the engine. The boost pressure sensor is used to measure the amount of air entering the engine and indirectly measures the pressure in the intake manifold. The boost pressure sensor is installed on the intake manifold and is combined with the intake air temperature sensor. If the output value of the boost sensor is determined with the same value within 10485 ms, even if the values from other sensors, such as the atmospheric pressure sensor and the fuel pressure sensor, change, including the faulty boost sensor, a malfunction code is set.

Loss of power, smoke, limited fuel supply.

Check the value of the output signal of the boost sensor.

P0237

Boost pressure sensor, low signal.

The engine control module (ECM) must constantly monitor the exact amount of air that is entering the engine in order to determine the amount of fuel injected into the engine. The boost pressure sensor is used to measure the amount of air entering the engine and indirectly measures the pressure in the intake manifold. The boost pressure sensor is installed on the intake manifold and is combined with the intake air temperature sensor. If the output of the boost pressure sensor is found to be less than 1.5 V. for 1048 ms, a DTC will set.

Loss of power, smoke, limited fuel supply.

Open or short to ground of the circuit of terminals 27 and 23 of the ECM unit connectors (C10-2 and M99-2), the boost pressure sensor is faulty.

P0238

Boost pressure sensor, high signal.

The engine control module (ECM) must constantly monitor the exact amount of air that is entering the engine in order to determine the amount of fuel injected into the engine. The boost pressure sensor is used to measure the amount of air entering the engine and indirectly measures the pressure in the intake manifold. The boost pressure sensor is installed on the intake manifold and is combined with the intake air temperature sensor. If the boost pressure sensor output is found to be higher than 1.5 V. for 1048 ms, a DTC will set.

Loss of power, smoke, limited fuel supply.

Short circuit of the circuit of terminals 27 and 23 of the ECM connector (C10-2 and M99-2), open circuit of the terminal 20 of the ECM connector (M99-2), the boost pressure sensor is faulty.

P0301

Cylinder # 1, misfire detected.

If the amount of fuel for cylinder balancing control exceeds 9 mm³ / st or more, a fault code is set.

Unstable engine operation. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal 2 of the ECM connector (C10-2), short circuit in the injector coil, etc.

P0302

Cylinder # 2, misfire detected.

If the amount of fuel for cylinder balancing control exceeds 9 mm³ / st or more, a fault code is set.

Unstable engine operation. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal 2 of the ECM connector (C10-2), short circuit in the injector coil, etc.

P0303

Cylinder # 3, misfire detected.

If the amount of fuel for cylinder balancing control exceeds 9 mm³ / st or more, a fault code is set.

Unstable engine operation. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit of terminal 1 of the ECM connector (C10-1), short circuit in the injector coil, etc.

P0304

Cylinder # 4, misfire detected.

If the amount of fuel for cylinder balancing control exceeds 9 mm³ / st or more, a fault code is set.

Unstable engine operation. Engine damage is possible during prolonged operation with a faulty injector.

Open circuit terminal 3 of the ECM connector (C10-2), short circuit in the injector coil, etc.

P0335

Crankshaft position sensor, no pulses.

The position of the engine pistons is used to determine when the fuel is injected. After the crankshaft position sensor detects the piston position, it sends a signal to the ECM to determine the injection timing and engine speed. The camshaft position sensor is used to detect the top dead center of the compression stroke of each cylinder. Based on these signals, the ECM determines the fuel injection timing and injection order for each cylinder. If less than one pulse from the crankshaft position sensor is detected during one revolution of the crankshaft, a DTC is set.

Poor engine starting as the ECM only receives a signal from the camshaft position sensor.

Open or short circuit at terminals 6 and 7 of the ECM connector (M99-2), sensor malfunction.

P0340

Camshaft position sensor, no pulses.

The position of the engine pistons is used to determine when the fuel is injected. After the crankshaft position sensor detects the piston position, it sends a signal to the ECM to determine the injection timing and engine speed. The camshaft position sensor is used to detect the top dead center of the compression stroke of each cylinder. Based on these signals, the ECM determines the fuel injection timing and injection order for each cylinder. If during one revolution of the camshaft, less than one pulse from the camshaft position sensor is detected, a DTC is set.

Poor engine starting as the ECM only receives a signal from the crankshaft position sensor.

Open or short circuit at terminal 19, 30.32 of the ECM connector (C10-2), sensor malfunction.

P0385

Camshaft and crankshaft position sensors, no pulses.

The position of the engine pistons is used to determine when the fuel is injected. After the crankshaft position sensor detects the piston position, it sends a signal to the ECM to determine the injection timing and engine speed. The camshaft position sensor is used to detect the top dead center of the compression stroke of each cylinder. Based on these signals, the ECM determines the fuel injection timing and injection order for each cylinder. If the engine is found to stop at start in 1048ms. or more, a malfunction code is set.

The engine cannot be started, the power take-off does not work, the cylinder balancing is stopped, the engine brake does not work.

Defective camshaft sensor, crankshaft sensor, open or short circuit on terminals 6 and 7 of the ECM connector (M99-2) and terminals 19, 30, 32 of the ECM connector (C10-2).

P0501

Vehicle speed sensor (VSS) invalid signal.

The vehicle speed sensor detects the speed of the vehicle by reading the number of revolutions of the transmission output shaft. If the vehicle speed sensor sends a signal to the ECM, then this signal is used not only for a correction signal for the optimal amount of fuel by comparing the current engine speed and vehicle speed, but is also used as an information signal for the ETACS system. If a sudden change in the vehicle speed signal is detected above 100 km / h in 524.3 ms. or more, a malfunction code is recorded.

The ECM cannot detect the gear range as the vehicle speed is changing rapidly.

The speed sensor is faulty or an extraneous signal appears at terminal 27 of the ECM connector (M99-1).

P0502

Vehicle speed sensor (VSS), short or open input.

The vehicle speed sensor detects the speed of the vehicle by reading the number of revolutions of the transmission output shaft. If the vehicle speed sensor sends a signal to the ECM, then this signal is used not only for a correction signal for the optimal amount of fuel by comparing the current engine speed and vehicle speed, but is also used as an information signal for the ETACS system. If the vehicle speed sensor signal is found to be lower than 0.1 km / h. in 1200 ms. or more, a malfunction code is set.

The ECM cannot detect the gear range because the speed signal is not being supplied.

The speed sensor is faulty, short circuit or open in the sensor circuit.

P0503

Vehicle speed sensor (VSS) frequency too high.

The vehicle speed sensor detects the speed of the vehicle by reading the number of revolutions of the transmission output shaft. If the vehicle speed sensor sends a signal to the ECM, then this signal is used not only for a correction signal for the optimal amount of fuel by comparing the current engine speed and vehicle speed, but is also used as an information signal for the ETACS system. If while driving, the speed sensor signal is detected above 200 km / h. in 524.3 ms. or more, a malfunction code is set.

The ECM cannot detect the gear range because the speed signal is greater than 200 km / h.

The speed sensor is faulty or an extraneous signal appears in the sensor circuit.

P0562

Low voltage in the system.

If battery voltage is detected below 16 V., a DTC will set.

The engine cannot be started.

Defective batteries, alternator, battery charging circuit, incorrect voltage at terminals 5, 6, 7 of the ECM connector (M99-1).

P0563

High voltage in the system.

If battery voltage is found to be higher than 32V, a DTC will set.

Defective batteries, alternator, battery charging circuit, incorrect voltage at terminals 5, 6, 7 of the ECM connector (M99-1).

P0601

ECM, checksum verification error.

If a checksum mismatch is detected 3 times in a row, a malfunction code is set.

The engine cannot be started.

Malfunction of the central processing unit of the ECM.

P0602

Error in the QR code.

If the QR code of at least one of the injectors differs from the code that is written in the EEPROM of the ECM in 768 ms. or more per day, a malfunction code is set. The QR code value for each injector must be written to the ECM using a scan tool.

Control is carried out by previously recorded codes. Unstable idling is possible.

Difference between QR injector and QR in ECM, internal error in ECM.

P0606

Malfunction of the main processor in the ECM.

The engine cannot be started.

The main processor in the ECM is defective.

P0607

Malfunction of the main processor in the ECM.

The engine cannot be started.

The main processor in the ECM is defective.

P0615

Starter switch, short to battery power.

If after starting the engine or when the engine speed is more than 300 rpm. a voltage higher than 0 V is detected, a fault code is set.

The engine stops to prevent damage to the starting system.

A short to battery power from the terminal 14 of the ECM connector (M99-2) or the starter switch is faulty.

P0627

Fuel pump, control circuit open.

The supply control valve (SCV) is a solenoid type. The ECM monitors the valve opening and closing times, and controls the amount of fuel from the pump to set the target rail pressure. When the SCV is closed, the fuel line closes, increasing fuel pressure and supplying high pressure fuel to the common rail. When the fuel pressure decreases, the SCV opens and fuel is sucked in for the next pumping. The relay powers the low pressure fuel pump and is controlled by the ECM. When the ignition key is turned to the ON position, the relay is energized for 1.5 seconds and then turned off, this is done to diagnose the relay. If the ECM detects engine speed above 45 rpm, the ECM activates the relay and the low pressure pump delivers fuel to the high pressure circuit. Low pressure vane-type pump, driven by an electric motor and installed in the fuel tank. If the SCV load current is higher than 30% and the current is detected lower than 1,100 mA for 819.2 ms. or more, a malfunction code is recorded.

Engine power is limited (common rail pressure limitation).

Short circuit to ground of terminals 8, 9, 10, 11 of the ECM unit connector (C10-1), open circuit of the ECM or SCV, high resistance on the SCV contacts.

P0629

Fuel pump, short circuit to battery power.

The supply control valve (SCV) is a solenoid type. The ECM monitors the valve opening and closing times, and controls the amount of fuel from the pump to set the target rail pressure. When the SCV is closed, the fuel line closes, increasing fuel pressure and supplying high pressure fuel to the common rail. When the fuel pressure decreases, the SCV opens and fuel is sucked in for the next pumping. The relay powers the low pressure fuel pump and is controlled by the ECM. When the ignition key is turned to the ON position, the relay is energized for 1.5 seconds and then turned off, this is done to diagnose the relay. If the ECM detects engine speed above 45 rpm, the ECM activates the relay and the low pressure pump delivers fuel to the high pressure circuit. Low pressure vane-type pump, driven by an electric motor and installed in the fuel tank. If the SCV load current is lower than 30% and the current is detected higher than 1,100 mA, for 819.2 ms. or more, a malfunction code is recorded.

Engine power is limited (common rail pressure limitation).

Short circuit to the power supply of terminals 8, 9, 10, 11 of the ECM unit connector (C10-1), open circuit of the ECM or SCV.

P0704

The clutch switch is defective.

The clutch switch is located on top of the clutch pedal. The ECM determines the clutch engaging state through a signal from the switch. If a signal from the switch is not detected within 1.048 ms, a fault code is set.

Engine brake and cruise control inoperative.

Short circuit to power terminal 8 of the ECM connector (M99-3), the switch is faulty.

P0850

The neutral switch is defective.

The neutral switch is mounted on the control housing at the top of the transmission. The switch sends a signal to the ECM to determine the injection quantity when the transmission is in neutral. When in motion, the output from the switch does not change for 1.048 ms. and above, a malfunction code is set.

Engine brake, power take-off does not work. Idle speed control is limited.

Short circuit to power terminal 32 of the ECM connector (M99-2), the switch is faulty.

P1091

Fuel system cylinder # 1 leak detected.

Flow dampers are located at the top of the fuel rail to reduce high pressure pulses between the injectors and the common rail and stabilize the fuel supply to the pressure lines and injectors. The flow damper closes the fuel supply to the injector if the pressure in the injector and in the common rail is different. When excess fuel leaks, the damper is activated and the fuel line to the injector is blocked. If the ECM detects a leak, a DTC will set.

Engine power is limited, engine is unstable.

Defective injector # 1, fuel leak from the high pressure system.

P1092

Fuel system cylinder # 2 leak detected.

Flow dampers are located at the top of the fuel rail to reduce high pressure pulses between the injectors and the common rail and stabilize the fuel supply to the pressure lines and injectors. The flow damper closes the fuel supply to the injector if the pressure in the injector and in the common rail is different. When excess fuel leaks, the damper is activated and the fuel line to the injector is blocked. If the ECM detects a leak, a DTC will set.

Engine power is limited, engine is unstable.

Defective injector # 2, fuel leak from the high pressure system.

P1093

Fuel system cylinder # 3 leak detected.

Flow dampers are located at the top of the fuel rail to reduce high pressure pulses between the injectors and the common rail and stabilize the fuel supply to the pressure lines and injectors. The flow damper closes the fuel supply to the injector if the pressure in the injector and in the common rail is different. When excess fuel leaks, the damper is activated and the fuel line to the injector is blocked. If the ECM detects a leak, a DTC will set.

Engine power is limited, engine is unstable.

Defective injector # 3, fuel leak from the high pressure system.

P1094

Fuel system cylinder # 4 leak detected.

Flow dampers are located at the top of the fuel rail to reduce high pressure pulses between the injectors and the common rail and stabilize the fuel supply to the pressure lines and injectors. The flow damper closes the fuel supply to the injector if the pressure in the injector and in the common rail is different. When excess fuel leaks, the damper is activated and the fuel line to the injector is blocked. If the ECM detects a leak, a DTC will set.

Engine power is limited, engine is unstable.

Defective injector # 4, fuel leak from the high pressure system.

P1120

Accelerator pedal sensor, signal is incorrect.

The accelerator pedal sensor detects the position of the pedal and sends signals to the ECM. The sensor consists of two potentiometers. If, while driving, the accelerator pedal sensor indicates standby, while the idle switch is in the off state, or at the same time problems are detected with pedal sensors # 1 and # 2 for 524.3 msec or more, a malfunction code is set.

Open or short of terminals 21, 22 of the ECM connector, faulty wiring or faulty sensor.

P1190

Pump supply valve (SCV) stuck.

The supply control valve (SCV) is a solenoid type. The ECM monitors the valve opening and closing times, and controls the amount of fuel from the pump to set the target rail pressure. When the SCV is closed, the fuel line closes, increasing fuel pressure and supplying high pressure fuel to the common rail. When the fuel pressure decreases, the SCV opens and fuel is sucked in for the next pumping. The relay powers the low pressure fuel pump and is controlled by the ECM. When the ignition key is turned to the ON position, the relay is energized for 1.5 seconds and then turned off, this is done to diagnose the relay. If the ECM detects engine speed above 45 rpm, the ECM activates the relay and the low pressure pump delivers fuel to the high pressure circuit. Low pressure vane-type pump, driven by an electric motor and installed in the fuel tank. If the difference between the target pressure and the actual pressure is more than 100 bar or more, a fault code is set.

The SCV is stuck.

P1217

Pump power protection.

If the pump pressure is detected above the limit value in 32 ms. or more, a malfunction code is set.

The engine stops.

The SCV is stuck or the valve wiring is faulty.

P1218

The pump has been replaced.

If the pump pressure is detected above the limit value in 32 ms. or more, a malfunction code is set.

The engine stops.

The SCV is stuck or the valve wiring is faulty.

P1219

The feed pump is defective.

If low fuel pressure is detected, a DTC will set.

The engine stops.

The pump is faulty, the fuel lines or the fuel filter are clogged.

P1231

Exhaust brake, short to ground.

If the exhaust brake does not work during vehicle operation, a DTC will be set.

The exhaust brake does not work.

Short circuit to ground or open circuit of terminal 15 of the ECM connector (M99-2).

P1232

Exhaust brake, short circuit to battery power.

If the exhaust brake does not work during vehicle operation, a DTC will be set.

The exhaust brake does not work.

Short circuit to power terminal 15 of the ECM connector (M99-2).

P1383

Glow plug relay, short to battery power.

The spark plug heats the air forced into the engine and makes the fuel easier to ignite, which ensures quick engine start at low ambient temperatures. The ECM controls a relay based on engine temperature. If a relay is detected to be energized but the relay has not energized within 3000ms, the ECM will set a DTC.

Defective relay or short to power on terminals 1,2 of the ECM connector (M99-3).

P1384

Glow plug relay, short to ground.

The spark plug heats the air forced into the engine and makes the fuel easier to ignite, which ensures quick engine start at low ambient temperatures. The ECM controls a relay based on engine temperature. If a relay is detected to be energized but the relay has not energized within 3000ms, the ECM will set a DTC.

Defective relay, open circuit or short to ground of contacts 1, 2 of the ECM unit connector (M99-3).

P1616

The main relay is defective.

The main relay energizes when the ignition is turned on and supplies power to the ECM. The relay has the function of supplying power to various switches and actuators, and disconnects power from the batteries through the central switchgear. When the ignition is on, the main relay is energized and controls various solenoids, relays, switches and the ECM. If the ignition is turned off, while the main relay is activated and a voltage of 16 V or more is detected on pins 5,6,7 of the ECM (M99-1) connector, a malfunction code is set.

Short circuit to power in the chain of contacts 5,6,7 of the ECM unit connector (M99-1) or the relay is faulty.

P2146

Common injection 1, open circuit.

If the ECM detects an open in the # 1 and # 4 injector harness, a DTC will set.

Engine power is limited.

Damage to the wiring or lack of contact on the terminals 2,3,5,6 of the ECM connector (C10-2).

P2147

Common injection 1, low voltage.

If the ECM detects an open in the # 1 and # 4 injector harness, a DTC will set.

Engine power is limited.

Damage to the wiring or lack of contact on the terminals 2,3,5,6 of the ECM connector (C10-2).

P2148

Common injection 1, high voltage.

If the ECM detects a short to B + on the # 1 and # 4 injector circuits, a DTC will set.

Engine power is limited.

Short circuit to the power supply circuit of terminals 5,6 of the ECM connector (C10-2).

P2149

Common injection 2, open circuit.

If the ECM detects an open in the # 2 and # 3 injector harness, a DTC will set.

Engine power is limited.

Damage to the electrical wiring or lack of contact on terminals 1,2,6,7 of the ECM connector (C10-2).

P2150

Common injection 2, low voltage.

If the ECM detects an open in the # 2 and # 3 injector harness, a DTC will set.

Engine power is limited.

Damage to the wiring or a short to ground on a circuit of contacts 1,2 of the ECM connector (C10-1).

P2151

Common injection 2, high voltage.

If the ECM detects a short to B + on the # 2 and # 3 injector circuits, a DTC will set.

Engine power is limited.

Short circuit to the power supply circuit of terminals 6,7 of the ECM connector (C10-1).

P2293

Fuel pressure regulator 2, performance.

If the pressure limiting valve detects high common rail pressure, the valve will operate and function to return fuel to the tank to protect the system. This DTC can be set if the engine is started with a clogged fuel line, with a disconnected SCV proportional valve connector, and no fuel in the tank. If the fuel pressure sensor is faulty or the fuel pressure in the rail exceeds 2210 bar, a fault code is set.

Engine power is limited.

The low pressure fuel line is clogged, the fuel filter is clogged, the fuel pressure sensor is faulty, the SCV valve connector is disconnected.

P2503

Charging system, low voltage.

If the ECM charging current is low, a DTC will set.

Engine power is limited.

Defective alternator, charging wiring, or internal ECM malfunction.

P2504

Charging system, high voltage.

If the ECM charging current is high, a DTC will set.

Engine power is limited.

Defective alternator, charging wiring, or internal ECM malfunction.