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DTC P1E40-P1E42

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P1E40: 14 Volt Power Module Hybrid/EV Battery System Voltage Performance

DTC P1E41: 14 Volt Power Module Hybrid/EV Battery System Overvoltage Sensing Circuit

DTC P1E42: 14 Volt Power Module Hybrid/EV Battery System High Voltage

Circuit/System Description

The 14 V power module, also called the accessory DC power control module, constantly monitors system input and output voltage. This sensor is internal to the 14 V power module and is not serviced separately from the control module.

Conditions for Running the DTC

The vehicle is ON.

Conditions for Setting the DTC

Voltage greater than 450 V has been detected.

Action Taken When the DTC Sets

    • DTCs P1E40, P1E41 and P1E42 are Type C DTCs.
    • The power inverter module requests the hybrid powertrain control module 2 to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTCs P1E40, P1E41 and P1E42 are Type C DTCs.

Diagnostic Aids

DTCs P1E41 and P1E42 may indicate that the high-voltage contactor relays may have opened while large current flow was present. Conditions such as loss of hybrid powertrain control module 2 power or earth or removal of the high-voltage manual disconnect while the vehicle was driving could create a voltage surge that may set this DTC.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

If the DTC is set, program the K1 14V power module. If the DTC resets, replace the K1 14 V power module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Accessory DC Power Control Module, also called the 14 V power module, replacement, programming and set-up.

   


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