P1ABC

DTC P1ABC or P1ABD

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 P1ABC

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14 Volt Power Module Hybrid/EV Battery System Voltage Low Voltage

DTC P1ABD

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14 Volt Power Module Hybrid/EV Battery System Voltage High Voltage

Circuit/System Description

The 14V power module, often referred to as 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 and the hybrid/EV battery contactors are closed.

Conditions for Setting the DTC

* DTC P1ABC or P1ABD: The high voltage sensor detects voltage less than 50V for 5 seconds.

* DTC P1ABD: The high voltage sensor detects voltage greater than 500V for 5 seconds.

Action Taken When the DTC Sets

DTCs P1ABC and P1ABD are Type C DTCs.

Conditions for Clearing the DTC

DTCs P1ABC and P1ABD are Type C DTCs.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

1. Verify that DTC P0562 or P0563 are not set.

• If DTC P0562 or P0563 is set, refer to DTC B1325, B1330, B1517, C0800, C0899, C0900, C12E1, C12E2, P0562, P0563, P1A0C, P1A0D, or P1EFC B1325.

2. 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.