P1EB3

DTC P1EB2-P1EB5

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 Descriptors

DTC P1EB2
- Hybrid/EV Battery Interface Control Module 1 Not Programmed

DTC P1EB3
- Hybrid/EV Battery Interface Control Module 2 Not Programmed

DTC P1EB4
- Hybrid/EV Battery Interface Control Module 3 Not Programmed

DTC P1EB5
- Hybrid/EV Battery Interface Control Module 4 Not Programmed

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

Circuit/System Description

When the Battery Energy Control Module is flash programmed, the Hybrid/EV Battery Interface Control Module operating software and calibrations are provided to the Battery Energy Control Module. The Hybrid/EV Battery Interface Control Module software and calibrations are then loaded to each of the Hybrid/EV Battery Interface Control Modules from the Battery Energy Control Module. This operation is automatic and requires no operator action. At this point, if any of the Hybrid/EV Battery Interface Control Modules are not programmed correctly, the appropriate DTC is set.

This fault is internal to the Hybrid/EV Battery Interface Control Modules and no external circuits are involved.

Conditions for Running the DTC

* The Battery Energy Control Module is awake and communicating.

* The system voltage is at least 9 V.

Conditions for Setting the DTC

The Hybrid/EV Battery Interface Control Module is not programmed correctly.

Action Taken When the DTC Sets

* The slave data that are incompatible with the Battery Energy Control Module software are set to Invalid, 0 V, and -40°C (-40°F).

* DTCs P1EB2, P1EB3, P1EB4, and P1EB5 are type A DTCs.

Conditions for Clearing the DTC

* The Hybrid/EV Battery Interface Control Module is programmed correctly.

* DTCs P1EB2, P1EB3, P1EB4, and P1EB5 are type A DTCs.

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 P1EB2, P1EB3, P1EB4, or P1EB5 is not set.

• If any of the DTCs are set

1. Program the K16 Battery Energy Control Module.

2. Verify the DTC does not set.

• If the DTC P1EB2 sets, replace the K112A Hybrid/EV Battery Interface Control Module 1.

• If the DTC P1EB3 sets, replace the K112B Hybrid/EV Battery Interface Control Module 2.

• If the DTC P1EB4 sets, replace the K112C Hybrid/EV Battery Interface Control Module 3.

• If the DTC P1EB5 sets, replace the K112D Hybrid/EV Battery Interface Control Module 4.

• If the DTC does not set

3. All OK.

• If none of the DTCs are 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