СИСТЕМА ECD (для моделей без контроллера свечей накаливания), Diagnostic DTC:P0194

DTC Code DTC Name
P0194 Fuel Rail Pressure Sensor Circuit Intermittent

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0194 Fuel Rail Pressure Sensor Circuit Intermittent

ECM internal error

(1 trip detection logic)

  • ECM

 Comes on DTC stored
DTC Detection Drive Pattern
DTC No. DTC Detection Drive Pattern
P0194 Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

CAUTION / NOTICE / HINT

Note

When replacing the ECM, perform ECM Initialization and Registration.

Click here

Tech Tips


  • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing a new ECM, perform all of the initialization and registration procedures for the "Learning Values Write" function by following the instructions shown on the GTS display.

  • Read freeze frame data using the GTS. 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. REPLACE ECM


    1. Replace the ECM.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  2. CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED


    1. Connect the GTS to the DLC3.

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

    3. Clear the DTCs.


      Powertrain > Engine and ECT > Clear DTCs

    4. Turn the ignition switch off and wait for 30 seconds or more.

    5. Start the engine.

    6. Drive the vehicle with a stop-and-go city drive pattern for more than 15 minutes.

      CAUTION:

      When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    7. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

    8. Confirm that the DTC is not output again.


      Powertrain > Engine and ECT > Trouble Codes

      Tech Tips

      Perform the following procedure using the GTS to determine whether or not the DTC judgment has been carried out.


      1. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.


        Powertrain > Engine and ECT > Utility
        Tester Display
        All Readiness

      2. Input DTC P0194.

      3. Check that STATUS is NORMAL. If STATUS is INCOMPLETE or N/A, repeat the confirmation driving pattern process.

      Result
      Proceed to
      NEXT

    NEXT

    END