Service Information

Volt

DTC P1EB1

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 P1EB1 00: Hybrid/EV Battery Interface Control Module Software Incompatible

Circuit/System Description

This is the software incompatibility issue between the hybrid battery interface control modules and the battery energy control module. No external circuits are involved.

Conditions for Running the DTC

•	Vehicle ON.

•	The system voltage is at least 9 V.

•	DTC U2401, U2603, U2604, U2605 or U2606 is not set.

Conditions for Setting the DTC

•	Any one of the hybrid battery interface control module software revision does not match.

•	Battery energy control module software and hybrid battery interface control module software are incompatible.

Action Taken When the DTC Sets

•	Slave data that is incompatible with the battery energy control module software is set to Invalid, 0 V and -40°C (-40°F).

•	DTC P1EB1 is a type A DTC.

Conditions for Clearing the DTC

DTC P1EB1 is a type A DTC.

Diagnostic Aids

If stored only as a history DTC and not retrieved as a current DTC, do not replace the control module.

Circuit/System Verification

If the DTC P1EB1 is set, program the K16 battery energy control module. This DTC should not reset.

⇒	If the DTC resets without other DTCs set, replace the A4 hybrid/EV battery pack.

⇒	If the DTC resets along with any of the DTCs P1EB2, P1EB3, P1EB4, or P1EB5 set, refer to DTC P1EB2-P1EB5 .

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Drive Motor Battery Replacement and Shipping Preparation

•	Control Module References for control module replacement, programming and setup