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  • P2266 Water In Fuel (WIF) Sensor Voltage Too Low

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    Mopar1973Man

    P2266 WATER IN FUEL (WIF) SENSOR VOLTAGE TOO LOW

    When Monitored and Set Condition:

    When Monitored: Ignition on.
    Set Condition: Low voltage detected at the WIF signal circuit at the ECM.

    POSSIBLE CAUSES

    • OTHER DTC'S PRESENT
    • WATER IN FUEL
    • ECM
    • INTERMITTENT CONDITION

    DIAGNOSTIC PROCEDURE

    NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

    1. With the DRBIII®, read DTCs. Do you have any additional water in fuel DTCs?
      Yes --> Repair other Water in fuel sensor DTCs first. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
      No --> Go To 2
    2. Using the service publications as a guide, drain the water in fuel separator. Did the DTC become inactive after draining the water in fuel separator?
      Yes --> Clear DTC, repair complete. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
      No --> Go To 3
    3. Disconnect the WIF sensor harness connector.
      NOTE: Check connectors - Clean/repair as necessary.
      Using the DRBIII®, monitor for DTCs while connecting a jumper wire between the (G123) signal circuit of the water in fuel sensor and battery voltage. Did the water in fuel light go out?
      Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure). Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).
      No --> Replace and program the ECM in accordance with the Service Information. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

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