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  • P0338 Crankshaft Position (CKP) Sensor Voltage Too High

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    Mopar1973Man

    P0338 CRANKSHAFT POSITION (CKP) SENSOR VOLTAGE TOO HIGH

    When Monitored and Set Condition:

    When Monitored: With the key on.
    Set Condition: Voltage detected at the CKP is above a calibrated value for a calibrated amount of time.

    POSSIBLE CAUSES

    • (K6) 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
    • INTERMITTENT CONDITION
    • ECM

    DIAGNOSTIC PROCEDURE

    1. Turn the ignition off. Disconnect the ECM harness connector(s). Disconnect the CKP sensor harness connector. Check connectors - Clean/repair as necessary. Measure voltage between the (K6) 5-volt supply circuit in the sensor harness connector and battery negative. Is the voltage greater than 1 volt?
      Yes --> Repair or replace the shorted wiring harness. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
      No --> Go To 2
    2. Reconnect the ECM harness connectors. Ignition on, engine not running. Connect a jumper wire between the sensor (K6) 5-volt supply circuit and the sensor (K167) return in the sensor harness connector. Did DTC P0337 set?
      Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
      No --> Replace the ECM. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

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