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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 217 (Engine Control System (DTC/Circuit Diagnosis) (CUMMINS 5.0L) (6 Of 6)) >> DTC/Circuit Diagnosis >> DTC P2541-00: Fuel Pressure Sensor >> 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. Repair DTCs related to power sensor supply circuit before performing diagnosis procedure for this DTC.
    2. Turn ignition switch ON.
    3. Connect CONSULT and check for "ENGINE" diagnostic trouble codes.

    Are any power sensor supply related DTCs detected?

    YES

    Refer to DTC Index .

    NO

    GO TO 2 .

  2. CHECK FOR CURRENT DTC 

    Check for DTC P2541 - 00 being current on the CONSULT screen.

    Is applicable DTC current?

    YES

    GO TO 3 .

    NO

    Refer to Intermittent Incident .

  3. INSPECT FUEL PRESSURE SENSOR AND CONNECTOR PINS 
    1. Turn ignition switch OFF.
    2. Disconnect the fuel pressure sensor.
    3. Inspect the harness 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.
    • GO TO 13 .
  4. CHECK THE PRESSURE SENSOR POWER SUPPLY AND GROUND CIRCUITS 
    1. Turn ignition switch ON.
    2. Check the voltage between fuel pressure sensor supply voltage and return circuit terminals.

      Fuel pressure sensor

      Voltage (V)

      (Approx.)

      Connector

      Terminal (+)

      Terminal (-)

      F197

      1

      2

      5

    Is the inspection result normal?

    YES

    GO TO 5 .

    NO

    GO TO 7 .

  5. CHECK THE CIRCUIT RESPONSE 
    1. Turn ignition switch OFF.
    2. Connect a jumper wire between the fuel pressure sensor connector F197 power supply terminal 1 and signal circuit terminal 3.
    3. Turn ignition switch ON and wait 30 seconds.
    4. Connect CONSULT and check for current "ENGINE" diagnostic trouble codes.

    Did DTC P2542 - 00 become current and DTC P2541 - 00 past?

    YES

    GO TO 6 .

    NO

    GO TO 10 .

  6. CHECK THE DTC AND VERIFY FUEL PRESSURE SENSOR CONDITION 
    1. Turn ignition switch OFF.
    2. Disconnect the jumper wire.
    3. Reconnect the fuel pressure sensor.
    4. Turn ignition switch ON and wait 30 seconds.
    5. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Did P2541 - 00 DTC become current?

    YES

    NO

    • The removal and installation of the connector corrected the issue.
    • GO TO 13 .
  7. INSPECT ECM AND ELECTRICAL CONNECTOR PINS 
    1. Turn ignition switch OFF.
    2. Disconnect the ECM connector F101.
    3. Inspect connectors 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 8 .

    NO

    • Repair or replace error-detected parts.
    • GO TO 13 .
  8. CHECK THE ECM RESPONSE 
    CAUTION: When probing or jumping between connector pins or terminals:
    • Always use extreme care or connector damage could result. Do not bend or damage connector pins and terminals. Damaged connectors, pins or terminals could result in additional issues or difficult-to-diagnose intermittent incidents.
    • Do not probe or short unintended circuits or component and/or control module damage could result.
    1. Turn ignition switch ON.
    2. Measure the voltage between ECM pins 106 (-) and 127 (+) at the ECM.

    Is the voltage reading approximately 5V?

    YES

    GO TO 9 .

    NO

  9. CHECK FOR CURRENT DTC 
    1. Turn ignition switch OFF.
    2. Connect all harness connectors.
    3. Turn ignition switch ON and wait 30 seconds.
    4. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Did P2541 - 00 DTC become past?

    YES

    • The removal and installation of the connector corrected the issue. Repair complete.
    • GO TO 13 .

    NO

    • An open or shorted fuel pressure sensor 5V supply circuit has been detected in the engine harness. Isolate all harnesses connected in series to determine which contains the open or pin-to-pin short. Repair as necessary.
    • GO TO 13 .
  10. INSPECT ECM AND ELECTRICAL CONNECTOR PINS 
    1. Turn ignition switch OFF.
    2. Disconnect the ECM connector F101.
    3. Inspect connectors 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 11 .

    NO

    • Repair or replace error-detected parts.
    • GO TO 13 .
  11. CHECK THE ECM RESPONSE 
    CAUTION: When probing or jumping between connector pins or terminals:
    • Always use extreme care or connector damage could result. Do not bend or damage connector pins and terminals. Damaged connectors, pins or terminals could result in additional issues or difficult-to-diagnose intermittent incidents.
    • Do not probe or short unintended circuits or component and/or control module damage could result.
    1. Connect a jumper wire between ECM pins 106 and 130 at the ECM.
    2. Wait for 30 seconds.
    3. With CONSULT, check for current ENGINE diagnostic trouble codes.

    Did DTC P2542 - 00 become current and DTC P2541 - 00 past?

    YES

    GO TO 12 .

    NO

  12. CHECK FOR CURRENT DTC 
    1. Turn ignition switch OFF.
    2. Disconnect jumper wire.
    3. Connect all harness connectors.
    4. Turn ignition switch ON and wait 30 seconds.
    5. Using CONSULT, check for current ENGINE diagnostic trouble codes.

    Did P2541 - 00 DTC become past?

    YES

    • An open or shorted fuel pressure sensor 5V supply circuit has been detected in the engine harness. Isolate all harnesses connected in series to determine which contains the open or pin-to-pin short. Repair as necessary.
    • GO TO 13 .

    NO

    • The removal and installation of the connector corrected the issue. Repair complete.
    • GO TO 13 .
  13. ERASE CURRENT DTCS 
    1. Turn ignition switch OFF.
    2. Connect all harness connectors.
    3. Turn ignition switch ON.
    4. Using CONSULT, erase "ENGINE" diagnostic trouble codes.
    5. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Is P2541 - 00 DTC past?

    YES

    GO TO 14 .

    NO

    Return to Diagnosis Procedure. Refer to DTC Description .

  14. ERASE CURRENT DTCS 
    1. Turn ignition switch OFF.
    2. Connect all harness connectors.
    3. Turn ignition switch ON.
    4. Using CONSULT, erase "ENGINE" diagnostic trouble codes.
    5. Using CONSULT, check for current "ENGINE" diagnostic trouble codes.

    Did all DTCs get erased with none remaining?

    YES

    Repair complete.

    NO

    Go to the appropriate Diagnosis Procedure. Refer to DTC Index .

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