P1E44

DTC P1E43 or P1E44

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 P1E43
- 14 Volt Power Module System Overvoltage Sensing Circuit

DTC P1E44
- 14 Volt Power Module System High Voltage

Circuit/System Description

The accessory DC power control module, also referred to as the 14V power 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 hybrid powertrain control module commands the 14V power module to begin charging.

Conditions for Setting the DTC

Voltage greater than 18V has been detected on the 14V circuit.

Action Taken When the DTC Sets

DTCs P1E43 and P1E44 are Type C DTCs.

Conditions for Clearing the DTC

DTCs P1E43 and P1E44 are Type C DTCs.

Diagnostic Aids

A battery charger or vehicle jump start may have 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.