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DTC P1E8E-P1E91

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 Descriptors

DTC P1E8E 00: Hybrid/EV Battery Interface Control Module 1 Performance

DTC P1E8F 00: Hybrid/EV Battery Interface Control Module 1 Random Access Memory Performance

DTC P1E90 00: Hybrid/EV Battery Interface Control Module 1 Read Only Memory Performance

DTC P1E91 00: Hybrid/EV Battery Interface Control Module 1 Long-Term Memory Performance

Circuit/System Description

The hybrid battery interface control module 1 will diagnose its own systems and determine when a fault condition is present. This diagnostic applies to internal microprocessor integrity conditions within the hybrid battery interface control module 1. This fault is internal to the hybrid battery interface control module 1 and no external circuits are involved.

Conditions for Running the DTC

    • The control module is awake.
    • The system voltage is at least 9 V.
    • DTC U2603 is not set.

Conditions for Setting the DTC

The control module has detected an internal malfunction.

Action Taken When the DTC Sets

DTCs P1E8E, P1E8F, P1E90 and P1E91 are type A DTCs.

Conditions for Clearing the DTC

DTCs P1E8E, P1E8F, P1E90, and P1E91 are type A DTCs.

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

Verify that DTC P1E8E, P1E8F, P1E90 or P1E91 is not set.

If any of the DTCs are set, replace the A4 hybrid/EV battery pack.

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
   


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