ECD SYSTEM, Diagnostic DTC:P1608

DTC Code DTC Name
P1608 Engine Lack of Power

DESCRIPTION

This DTC is stored if engine output decreases due to a malfunction in the cooling system.

Using the intelligent tester, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

P1608
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
-

With the accelerator pedal fully depressed, engine output decreases for approximately 4 to 10 seconds due to a broken component in the cooling system.

(1 trip detection logic)

  • Engine coolant leak

  • Radiator assembly clogged

  • Engine coolant temperature sensor

  • Engine coolant temperature sensor out of range or stuck

  • Fan

  • No. 2 fan

CAUTION / NOTICE / HINT

Tech Tips


  • In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P1608 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine lack of power on hesitation.

    As the DTC can be stored as a result of certain user actions, even if the DTC is output, if the customer makes no mention of problems, clear the DTC without performing any troubleshooting and return the vehicle to the customer.

  • If any other DTCs are output, perform troubleshooting for 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.

  • When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data.

  • A005GXIE46
    *a DTC is stored
    *b 0.5 seconds
    *c Freeze frame data recorded point

    The fourth set of freeze frame data is the data recorded when the DTC is stored.

PROCEDURE


  1. READ OUTPUT DTC (RECORD STORED DTC AND FREEZE FRAME DATA (PROCEDURE 1))


    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. Record the stored DTC and Freeze Frame Data.

      Tech Tips

      This freeze frame data shows the actual engine conditions when engine lack of power trouble occurred.


    NEXT

  2. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1608)


    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
      DTC P1608 is output A
      DTC P1608 and other DTCs are output B

      Tech Tips

      If any DTCs other than DTC P1608 are output, troubleshoot those DTCs first.


    A

    GO TO LACK OF POWER OR HESITATION Click here

    B

    GO TO DTC CHART Click here