P2094
DTC P2094
CIRCUIT DESCRIPTION
The camshaft position (CMP) actuator system is comprised of 4 CMP actuator solenoids, 4 oil control valves, and 4 CMP actuators. The engine control module (ECM) sends an electrical signal through the control circuits to the CMP actuator solenoids when a cam timing change is desired. The ground circuits of the CMP actuator solenoids are used as a return. If the ECM detects low voltage condition on one of these circuits, DTC P2088, P2090, P2092, P2094 sets.
DTC DESCRIPTORS
This diagnostic procedure supports the following DTCs:
- DTC P2088 Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1
- DTC P2090 Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 1
- DTC P2092 Intake Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2
- DTC P2094 Exhaust Camshaft Position (CMP) Actuator Solenoid Control Circuit Low Voltage Bank 2
CONDITIONS FOR RUNNING THE DTC
- DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, P2095 are not set.
- The engine is running.
- The CMP actuator has been commanded for more than 1 second.
- The ignition voltage is between 11-26 volts.
- DTC P2088, P2090, P2092, or P2094 runs continuously once the above conditions are met.
CONDITIONS FOR SETTING THE DTC
The ECM detects a low voltage condition on a CMP actuator solenoid control circuit for more than 1.6 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
The CMP actuator system will be disabled until the end of the ignition cycle.
CONDITIONS FOR CLEARING THE MIL/DTC
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.
TEST
