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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 208 (Engine Control System (DTC/Circuit Diagnosis) (CUMMINS 5.0L) (5 Of 6)) >> DTC/Circuit Diagnosis >> DTC P2269-00: Water In Fuel Condition >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC PRIORITY 
    1. Turn ignition switch ON.
    2. Connect CONSULT and check for other current "ENGINE" diagnostic trouble codes.
    NOTE: The following current DTC has priority over this DTC if it exists.
    • P2267-00

    Is P2267-00 DTC current?

    YES

    Refer to DTC Description .

    NO

    GO TO 2 .

  2. CHECK FOR CURRENT AND PAST DTCS 
    1. Using CONSULT, check for current and past "ENGINE" diagnostic trouble codes.
    2. Check for DTC P2269-00 being current or past on the CONSULT screen.

    Is applicable DTC present?

    YES

    • Drain the water from the fuel filter.
      NOTE: If DTC P2269-00 remains present, a malfunction in the sensor and/or connector may have occurred. Repair or replace the sensor and/or connector as necessary.
    • GO TO 3 .

    NO

    GO TO 3 .

  3. INSPECT THE WATER-IN-FUEL SENSOR AND CONNECTOR PINS 
    1. Turn ignition switch OFF.
    2. Disconnect the water-in-fuel sensor.
    3. Inspect connector for the following:
      • Loose connector.
      • Corroded pins.
      • Bent or broken pins.
      • Pushed back or expanded pins.
      • Moisture in or on the connector.
      • Missing or damaged connector seals.
      • Dirt or debris on or in the connector pins.
      • Connector shell broken.
      • Wire insulation damage.
      • Damaged connector locking tab.

    Is the inspection result normal?

    YES

    GO TO 4 .

    NO

    Repair or replace error-detected parts.

  4. INSPECT THE WATER-IN-FUEL SENSOR RESISTANCE 

    Test the water-in-fuel sensor resistance. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 5 .

    NO

  5. CHECK THE CIRCUIT RESPONSE 
    1. Reconnect the water-in-fuel sensor.
    2. Turn ignition switch ON.
    3. Wait 30 seconds.
    4. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Is P2269-00 DTC current?

    YES

    GO TO 6 .

    NO

    • The removal and installation of the connector corrected the issue.
    • GO TO 10 .
  6. INSPECT ECM AND ELECTRICAL CONNECTOR PINS 
    1. Turn ignition switch OFF.
    2. Disconnect the ECM.
    3. Inspect connector for the following:
      • Loose connector.
      • Corroded pins.
      • Bent or broken pins.
      • Pushed back or expanded pins.
      • Moisture in or on the connector.
      • Missing or damaged connector seals.
      • Dirt or debris on or in the connector pins.
      • Connector shell broken.
      • Wire insulation damage.
      • Damaged connector locking tab.

    Is the inspection result normal?

    YES

    GO TO 7 .

    NO

    • Repair or replace error-detected parts.
    • GO TO 10 .
  7. CHECK WATER IN FUEL SENSOR RETURN CIRCUIT FOR OPEN 
    1. Disconnect the water in fuel sensor.
    2. Check water-in-fuel sensor return circuit for continuity between ECM and water-in-fuel sensor connectors.

      ECM

      Water in fuel sensor

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E93

      41

      F225

      2

      Yes

    Is the inspection result normal?

    YES

    GO TO 8 .

    NO

    • Repair open circuit in harness or connectors.
    • GO TO 10 .
  8. CHECK WATER-IN-FUEL SENSOR SIGNAL CIRCUIT FOR OPEN 

    Check water in fuel sensor signal circuit for continuity between ECM and water in fuel sensor connectors.

    ECM

    Water in fuel sensor

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    E93

    77

    F225

    1

    Yes

    Is the inspection result normal?

    YES

    GO TO 9 .

    NO

    • Repair open circuit in harness or connectors.
    • GO TO 10 .
  9. CHECK WATER-IN-FUEL SENSOR SIGNAL CIRCUIT FOR SHORT TO OTHER CIRCUITS 

    Check water-in-fuel sensor signal circuit for continuity between ECM connector terminal 77 and all other terminals.

    ECM

    Continuity

    Connector

    Terminal

    Terminal

    E93

    77

    All others

    No

    Is the inspection result normal?

    YES

    GO TO 10 .

    NO

    • Repair or replace harness for a short circuit.
    • GO TO 10 .
  10. ERASE CURRENT DTCS 
    1. Reconnect all previously disconnected components.
    2. Turn ignition switch ON.
    3. Using CONSULT, erase ENGINE diagnostic trouble codes.
    4. Operate the engine within the "Conditions for Clearing the DTC".
    5. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Is P2269-00 DTC current?

    YES

    Diagnosis procedure needs to be repeated. Go to DTC Description .

    NO

    Repair complete.