Service Information

Volt

DTC P1ABC or P1ABD

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 P1ABC: 14 Volt Power Module Hybrid/EV Battery System Voltage Low Voltage

DTC P1ABD: 14 Volt Power Module Hybrid/EV Battery System Voltage High Voltage

The 14 V 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 14 V 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 500 V 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

Circuit/System Verification

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 .

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.