Hybrid/EV Energy Storage

DTC P0601-P0604 or P0606 (Hybrid Powertrain Control Module 2)

Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Diagnostic System Check - Vehicle
Review Strategy Based Diagnosis for an overview of the diagnostic approach. Strategy Based Diagnosis
Diagnostic Procedure Instructions provides an overview of each diagnostic category. Diagnostic Procedure Instructions

DTC Descriptors
DTC P0601 00: Control Module Read Only Memory Performance

DTC P0602 00: Control Module Not Programmed

DTC P0603 00: Control Module Long Term Memory Reset

DTC P0604 00: Control Module Random Access Memory Performance

DTC P0606 00: Control Module Processor Performance

Circuit/System Description
This diagnostic applies to internal microprocessor integrity conditions within the control module. This diagnostic also addresses if the control module is not programmed. The control module monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved.

Conditions for Running the DTC
Vehicle ON.
The system voltage is at least 7 V.

Conditions for Setting the DTC
The control module detects an internal malfunction or incomplete programming.

Action Taken When the DTC Sets
DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.
The high voltage contactor relays may open.

Conditions for Clearing the DTC
DTCs P0601, P0602, P0603, P0604, and P0606 are Type A DTCs.

Diagnostic Aids
DTC P0606 may set in Hybrid Powertrain Control Module 2 due to other faults. Do not replace the Hybrid Powertrain Control Module 2 until other DTCs are diagnosed first.

Circuit/System Verification
Verify that DTC P0601, P0602, P0603, P0604, or P0606 is not set.

If DTC P0601, P0602, P0603, P0604, or P0606 is set with other DTCs set, diagnose all other DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle. Diagnostic Trouble Code (DTC) List - Vehicle.

If the DTC P0601, P0602, P0603, P0604, or P0606 is set without other DTCs set, refer to DTC P0601-P0604, P0606, or P062F.

Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

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