P1E41

DTC P1E40-P1E42

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions 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 14V power module, also called the accessory DC power control module, constantly monitors system input and output voltage. This sensor is internal to the 14V 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 450V 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 ground 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 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 14V power module.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Programming and Relearning for Accessory DC Power Control Module, also called the 14V power module, replacement, programming, and setup.