HYBRID CONTROL SYSTEM, Diagnostic DTC:P1C8549

DTC Code DTC Name
P1C8549 High Voltage Power Resource Internal Electronic Failure

DESCRIPTION

The hybrid vehicle control ECU monitors the system internal operation, it will store a DTC and perform fail-safe control if it detects the following malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P1C8549 High Voltage Power Resource Internal Electronic Failure

Battery overcurrent or overload current occurs due to a malfunction in the high-voltage circuit between the hybrid system, battery and inverter.

(1 trip detection logic)

 Hybrid vehicle control ECU Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P1C8549

  • Hybrid Battery Current

  • Hybrid Battery Voltage

  • VL-Voltage before Boosting

  • VH-Voltage after Boosting

CONFIRMATION DRIVING PATTERN

Tech Tips

After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Drive the vehicle for approximately 10 minutes according to the freeze frame data items "Vehicle Speed", "Accelerator Position" and "Hybrid Battery Current".

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

PROCEDURE


  1. CHECK DTC OUTPUT (HYBRID CONTROL)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    4. Check for DTCs.


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      P1C8549 only is output. A
      DTCs other than P1C8549 is also output. B

    5. Turn the power switch off.


    A

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    B

    GO TO DTC CHART (HYBRID CONTROL SYSTEM) Click here