P1EB1

DTC P1EB1

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 P1EB1
- Hybrid/EV Battery Interface Control Module Software Incompatible

For symptom byte information, refer to Symptom Byte List Symptom Byte List.

Circuit/System Description

This is the software incompatibility issue between the Hybrid/EV 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/EV Battery Interface Control Module software revision does not match.

* Battery Energy Control Module software and Hybrid/EV Battery Interface Control Module software are incompatible.

Action Taken When the DTC Sets

* Slave data that are 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 device.

Circuit/System Verification

Danger: The Volt Battery Pack will utilize an exchange program. Please consult the most recent revision of bulletin/PI #PIP4841, available in Service Information (SI), for a list of approved Volt Battery Pack service procedures. Components that may be removed and serviced without exchanging the complete battery pack are identified in the bulletin/PI. Please contact the GM Technical Assistance Center if you have any questions.


1. Vehicle in Service Mode.

2. Verify DTC P1EB1 is not set.

• If DTC P1EB1 is set

1. Program the K16 Battery Energy Control Module.

2. Verify the DTC does not set.

• If the DTC sets without other DTCs set, replace the K16 Battery Energy Control Module.

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

• If the DTC does not set

3. All OK.

• If DTC P1EB1 is not set

3. All OK

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

Control Module References Programming and Relearning for device replacement, programming and setup