P1F08

DTC P1F06-P1F09

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 P1F06
- Hybrid/EV Battery Interface Control Module 1 Processor Performance

DTC P1F07
- Hybrid/EV Battery Interface Control Module 2 Processor Performance

DTC P1F08
- Hybrid/EV Battery Interface Control Module 3 Processor Performance

DTC P1F09
- Hybrid/EV Battery Interface Control Module 4 Processor Performance

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

Circuit/System Description

The Battery Energy Control Module compares an expected value with a value reported from a Hybrid/EV Battery Interface Control Module. If the value does not match for a particular Hybrid/EV Battery Interface Control Module, then a DTC is set for the corresponding Hybrid/EV Battery Interface Control Module. This fault is internal to the Battery Energy Control Module and the Hybrid/EV Battery Interface Control Modules and no external circuits are involved.

Conditions for Running the DTC

The devices are awake.

Conditions for Setting the DTC

A mismatch between an expected value in the device and a value received from the external device.

Action Taken When the DTC Sets

DTCs P1F06, P1F07, P1F08, and P1F09 are type A DTCs.

Conditions for Clearing the DTC

* DTCs P1F06, P1F07, P1F08, and P1F09 are type A DTCs.

* Vehicle goes to low battery power mode.

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 that DTC P1F06, P1F07, P1F08, or P1F09 is not set.

• If DTC P1F06 is set
Replace the K112A Hybrid/EV Battery Interface Control Module 1.

• If DTC P1F07 is set
Replace the K112B Hybrid/EV Battery Interface Control Module 2.

• If DTC P1F08 is set
Replace the K112C Hybrid/EV Battery Interface Control Module 3.

• If DTC P1F09 is set
Replace the K112D Hybrid/EV Battery Interface Control Module 4.

• If all DTCs P1F06, P1F07, P1F08, and P1F09 are set together
Replace the K16 Battery Energy Control Module.

• 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