ECD SYSTEM (for CCo), Diagnostic DTC:P0168

DTC Code DTC Name
P0168 Fuel Temperature Too High

DESCRIPTION

Refer to DTC P0180 Click here.

P0168
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Drive vehicle at high speed or with heavy load (Use freeze frame data from time malfunction occurred as reference while driving)

The fuel temperature is 110°C (230°F) or higher for 1 second or more.

(1 trip detection logic)

 Fuel temperature sensor
Related Data List
DTC No. Data List
P0168 Fuel Temperature

INSPECTION PROCEDURE

Tech Tips


  • If DTC P0180, P0182 and/or P0183 is stored at the same time as P0168, the fuel temperature sensor may have an open or short circuit. Troubleshoot those DTCs first.

  • Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE


  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0168)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / DTC.

    4. Read the DTCs.

      Result
      Result Proceed to
      P0168 is output A
      P0168 and other DTCs are output B

      Tech Tips

      If DTCs other than P0168 are output, perform troubleshooting for those codes first.


    B

    GO TO DTC CHART Click here

    A

  2. REPLACE FUEL TEMPERATURE SENSOR


    1. Replace the fuel temperature sensor Click here.


    NEXT

  3. BLEED AIR FROM FUEL SYSTEM


    1. Bleed the air from the fuel system Click here.


    NEXT

  4. PERFORM FUEL SUPPLY PUMP INITIALIZATION


    1. Perform fuel supply pump initialization Click here.


    NEXT

  5. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTCs Click here.

    3. Turn the ignition switch to ON and turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Fuel Temperature.

    5. Stop the engine, and then allow it to soak for 30 minutes or more.

    6. Start the engine.

    7. Run the engine at 2500 rpm with no load.

    8. Check that "Fuel Temperature" changes by 1°C (1.8°F) or more while 2500 rpm no load within 10 minutes.


    NEXT

    END