DTC [LF, L3]

CMP Timing

CMP actuator circuit malfunction (P0010)

• PCM monitors OCV voltage. If PCM detects OCV control voltage (calculated from OCV) is above or below the threshold voltage (calculated from battery positive voltage), PCM determines that OCV circuit has a malfunction.

CMP timing over-advanced (P0011)

• Actual valve timing is over-advanced by 30 deg. from target valve timing when the OCV is controlled within the maximum valve timing retard condition.

CMP timing over-retarded (P0012)

• Actual valve timing is over-retarded by 5 deg. from target valve timing for 5 s when the OCV system control is within feed-back range.

Oxygen Sensor Heater

Front HO2S heater circuit low input (P0031)

• The PCM monitors the front HO2S heater control signal at PCM terminal 4A. If the PCM turns the front HO2S heater off but the front HO2S heater circuit has low voltage, the PCM determines that the front HO2S heater circuit has a malfunction.

Front HO2S heater circuit high input (P0032)

• The PCM monitors the front HO2S heater control signal at PCM terminal 4A. If the PCM turns the front HO2S heater on but the front HO2S heater circuit has high voltage, the PCM determines that the front HO2S heater circuit has a malfunction.

Rear HO2S heater circuit low (P0037)

• The PCM monitors the rear HO2S heater control signal at PCM terminal 4D. If the PCM turns the rear HO2S heater off but the rear HO2S heater circuit has low voltage, the PCM determines that the rear HO2S heater circuit has a malfunction.

Rear HO2S heater circuit high (P0038)

• The PCM monitors the rear HO2S heater control signal at PCM terminal 4D. If the PCM turns the rear HO2S heater on but the rear HO2S heater circuit has high voltage, the PCM determines that the rear HO2S heater circuit has a malfunction.

MAF Sensor

MAF sensor circuit high input (P0102)

• The PCM monitors input voltage from the MAF sensor when the engine is running. If the input voltage at PCM terminal 1P is below 0.21 V, the PCM determines that the MAF circuit has a malfunction.

MAF sensor circuit high input (P0103)

• The PCM monitors input voltage from the MAF sensor when the engine is running. If the input voltage at PCM terminal 1P is above 4.9 V, the PCM determines that the MAF circuit has a malfunction.

MAP Sensor

MAP sensor circuit low input (P0107)

• The PCM monitors input voltage from the MAP sensor when the intake air temperature is above 10 °C {50 °F}. If the input voltage at PCM terminal 1J is below 0.1 V, the PCM determines that the MAP sensor circuit has a malfunction.

MAP sensor circuit high input (P0108)

• The PCM monitors input voltage from the MAP sensor when the intake air temperature is above 10 °C {50 °F}. If the input voltage at PCM terminal 1J is above 4.9 V, the PCM determines that the MAP sensor circuit has a malfunction.

Intake Air Temperature (IAT) Sensor

IAT sensor circuit low input (P0112)

• The PCM monitors input voltage from the IAT sensor. If the input voltage at PCM terminal 2E is below 0.2 V, the PCM determines that the IAT sensor circuit has a malfunction.

IAT sensor circuit high input (P0113)

• The PCM monitors input voltage from the IAT sensor. If the input voltage at PCM terminal 2E is above 4.8 V, the PCM determines that the IAT sensor circuit has a malfunction.

Engine Coolant Temperature (ECT) Sensor

ECT circuit low input (P0117)

• The PCM monitors the ECT sensor signal at PCM terminal 1M. If the PCM detects ECT sensor voltage below 0.2 V, the PCM determines that the ECT sensor circuit has a malfunction.

ECT circuit high input (P0118)

• The PCM monitors ECT sensor signal at the PCM terminal 1M. If the PCM detects ECT sensor voltage above 4.6 V, the PCM determines that the ECT sensor circuit has a malfunction.

Throttle Position (TP) Sensor

TP circuit low input (P0122)

• If the PCM detects that the TP sensor voltage at PCM terminal 2A is below 0.1 V after the ignition key is turned on, the PCM determines that TP circuit has a malfunction.

TP circuit high input (P0123)

• If the PCM detects that the TP sensor voltage at the PCM terminal 2A is above 4.9 V after the ignition key is turned on, the PCM determines that TP circuit has a malfunction.

Front Heated Oxygen Sensor (HO2S)

Front HO2S stuck low (P0131)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. If the input voltage from the sensor remains below 0.45 V for 41.2 s, the PCM determines that there is no front HO2S inversion.

- Engine speed is above 1,500 rpm.

- Engine coolant temperature is above 80 °C {176°F}.

Front HO2S stuck high (P0132)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. if the input voltage from the sensor remains above 0.45 V for 41.2 s, the PCM determines that there is no front HO2S inversion.

- Engine speed is above 1,500 rpm.

- Engine coolant temperature is above 80 °C {178 °F}.

Front HO2S circuit no activity detected (P0134)

• The PCM monitors input voltage from the front HO2S when the following conditions are met. If the input voltage from the sensor never exceeds 0.55 V for 83.2 s, the PCM determines that the sensor circuit is not activated.

- Engine speed is above 1,500 rpm.

- Engine coolant temperature is above 80 °C {176 °F}.

Rear Heated Oxygen Sensor (HO2S)

Rear HO2S circuit high input (P0138)

• The PCM monitors input voltage from the rear HO2S. If the input voltage from the rear HO2S sensor is above 0.45 V for 6.4 s during deceleration fuel cut, the PCM determines that the circuit input is high.

Rear HO2S circuit no activity detected (P0140)

• The PCM monitors input voltage from the rear HO2S when the following conditions are met. If the input voltage from the sensor never exceeds 0.55 V for 30.4 s, the PCM determines that the sensor circuit is not activated.

- Engine speed is above 1,500 rpm.

- Engine coolant temperature is above 80 °C {176 °F}.

Fuel System

Fuel trim system too lean (P0171)

• The PCM monitors short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) values during closed loop fuel control. the If fuel trim exceeds the preprogrammed criteria, the PCM determines that the fuel system is too lean.

Fuel trim system too rich (P0172)

• The PCM monitors short fuel trim (SHRTFT) and long fuel trim (LONGFT) values during closed loop fuel control. If the fuel trim exceeds the preprogrammed criteria, the PCM determines that the fuel system is too rich.

Knock Sensor

Knock sensor circuit low input (P0327)

• The PCM monitors the input signal from the knock sensor when the engine is running. if the input voltage between PCM terminals between 2P and 2S is below 0.9 V, the PCM determines that the knock sensor circuit has a malfunction.

Knock sensor circuit high input (P0328)

• The PCM monitors the input signal from the knock sensor when the engine is running. if the input the voltage between PCM terminals 2P and 2S is above 4.9 V, the PCM determines that the knock sensor circuit has a malfunction.

Crankshaft Position (CKP) Sensor

CKP sensor circuit malfunction (P0335)

• If the PCM does not receive input voltage from the CKP sensor for 4.2 s while the MAF is 2.0 g/s {0.26 lb/min.} or above, the PCM determines that the CKP sensor circuit has a malfunction.

Camshaft Position (CMP) Sensor

CMP sensor circuit malfunction (P0340)

• The PCM monitors voltage from the CMP sensor when the engine is running. If the PCM does not receive input voltage from the CMP sensor while the PCM receives an input signal from the CKP sensor, the PCM determines that the CMP circuit has a malfunction.

Ignition Coil

Ignition coil circuit malfunction (P0351, P0352)

• The PCM monitors output voltage to the ignition coil when the engine is running. If the voltage is incorrect, the PCM determines that the ignition coil circuit has a malfunction.

EGR System

EGR flow insufficient detected (P0401)

• The PCM monitors difference in intake manifold pressures when the EGR is operated and when it is stopped. If the difference is too small, the PCM determines that the EGR flow is insufficient.

EGR flow excessive detected (P0402)

• The PCM monitors the difference in intake manifold pressures when the EGR is operated and when it is stopped. If the difference is too large, the PCM determines that the EGR flow is excessive.

EGR valve (stepper motor) circuit malfunction (P0403)

• The PCM monitors input voltage from the EGR valve. If voltage at PCM terminals 4E, 4H, 4K, and/or 4N remains low or high, the PCM determines that the EGR valve circuit has a malfunction.

Purge Solenoid Valve

Evaporative emission control system purge control valve circuit malfunction (P0443)

• The PCM monitors input voltage from the purge solenoid valve. If voltage at PCM terminal 4U remains low or high, the PCM determines that the purge solenoid valve circuit has a malfunction.

Fan Control System

Fan control circuit malfunction (P0480)

• The PCM monitors input voltage from the fan control module. If the voltage at PCM terminal 1U remains low or high, the PCM determines that the fan control circuit has a malfunction.

Vehicle Speed Sensor (VSS)

VSS circuit malfunction (P0500) (MTX vehicles without ABS)

• The Vehicle speed signal is not input after the following conditions are met:

- Gear is in other than neutral position

- Load is above 40%

- Engine speed is 2,000 rpm or above

Idle Air Control (IAC) Valve

IAC system malfunction (P0505)

• The PCM monitors idle speed. If idle speed is 1,800 rpm or below for 3 s during KOER self test, the PCM determines that the IAC system has a malfunction.

IAC valve circuit malfunction (P0511)

• If the PCM detects that the PCM terminal 4G voltage is above or below threshold when IAC control duty target is within 16-70%, the PCM determines that the IAC valve circuit has a malfunction.

PCM Configuration

PCM programming error (P0602)

• No configuration data in PCM.

Note

• If "PCM CONFIGURATION" is successful, the PCM stores DTC P0602 and illuminates the MIL (System is normal). Clear DTC P0602 using the WDS or equivalent after "PCM CONFIGURATION".

• The MIL goes out after three drive cycles with no failure (DTCs remain in PCM).

Control module vehicle options error (P0610)

• PCM data configuration error.

Variable Intake-air System (VIS) Control Solenoid Valve

VIS control solenoid valve circuit low input (P0661)

• The PCM monitors the VIS control solenoid valve control signal at PCM terminal 4R. If PCM turns the VIS control solenoid valve off but voltage at PCM terminal 4R still remains low, the PCM determines that the VIS control solenoid valve circuit has a malfunction.

VIS control solenoid valve circuit high input (P0662)

• The PCM monitors the VIS control solenoid valve control signal at PCM terminal 4R. If PCM turns the VIS control solenoid valve on but voltage at PCM terminal 4R still remains high, the PCM determines that the VIS control solenoid valve circuit has a malfunction.

Variable Air Duct (VAD) Solenoid Valve

VAD control system circuit malfunction (P1410)

• The PCM monitors the VAD solenoid control signal at PCM terminal 4C. If the PCM detects that the VAD solenoid control signal does not change when VAD solenoid valve is switched to on or off, the PCM determines that the VAD solenoid control circuit has a malfunction.

PCM

PCM +BB (back-up battery) voltage low (P1562)

• The PCM monitors back up battery positive voltage at the PCM terminal 2Z. If the PCM detects battery positive terminal voltage below 2.5V for 2 s, the PCM determines that the backup voltage circuit has a malfunction.

Variable Tumble Control System

Variable tumble control solenoid valve circuit low input (P2009)

• The PCM monitors the variable tumble control solenoid valve control signal at PCM terminal 4T. If the PCM turns the variable tumble control solenoid valve off but voltage at PCM terminal 4T still remains low, the PCM determines that the knock sensor variable tumble control solenoid valve circuit has a malfunction.

Variable tumble control solenoid valve circuit high input (P2010)

• The PCM monitors the variable tumble control solenoid valve control signal at PCM terminal 4T. If the PCM turns the variable tumble control solenoid valve on but voltage at PCM terminal 4T still remains high, the PCM determines that the variable tumble control solenoid valve circuit has a malfunction.

Generator

Generator terminal B circuit open (P2502)

• The PCM judges generator output voltage is above 17 V and battery positive voltage is below 11 V.

Generator output voltage signal no electricity (P2503)

• The PCM needs above 20 A from the generator, and determines generator output voltage to be below 8.5 V when the engine is running.

Battery overcharge (P2504)

• The PCM determines generator output voltage is above 18.5 V or battery positive voltage is above 16 V when the engine is running.

Controller Area Network (CAN)

Can bus off (U0073)

• The CAN controller is damaged.

PCM cannot receive any signals from the ABS, ABS/TCS, or DSC HU/CM control module (U0121)

• The PCM cannot receive any signals from the ABS, ABS/TCS, or DSC HU/CM control module.

PCM cannot receive any signals from instrument cluster (U0155)

• The PCM cannot receive any signals from the instrument cluster.