P0A80
DTC P0A80
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 P0A80
- Replace Hybrid/EV Battery Pack
Circuit/System Description
The hybrid/EV powertrain control module 2 monitors the internal battery resistance of the battery pack as a means to determine if the battery has reached its end of life.
Conditions for Running the DTC
* Vehicle in Service Mode.
* Hybrid battery temperature is greater than -7° C (19.4° F)
* Hybrid battery state of charge is between 20% and 90%
* Battery voltage and current is varying. Requires more than 10 minutes of city driving.
* None of the following DTCs are set: P0A9C, P0A9D, P0A9E, P0ABB, P0ABC, P0ABD, P0AC1, P0AC2, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEA, P0AEB, P0AF8, P0B13, P0B10, P0B11, P0BC3, P0BC4, P0BC5, P0C34, P0C35, P0C36, P0C7D, P0C7E, P0C7F, P0C82, P0C83, P0C84, P0C89, P0C8A, P0C8B, P0C8E, P0C8F, P0C90, P0C93, P0C94, P0C95, P0C98, P0C99, P0C9A, P0CA9, P0CAA, P0CAB, P0CAE, P0CAF, P0CB0, P0CB3, P0CB4, P0CB5, P0CB8, P0CB9, P0CBA, P1A07, P1E8E, P1E8F, P1E90, P1E91, P1E93, P1E94, P1E95, P1E96, P1E97, P1E99, P1E9A, P1E9B, P1E9C, P1E9D, P1E9F, P1EA0, P1EA1, P1EA2, P1EA3, P1EA5, P1EB1, P1EB2, P1EB3, P1EB4, P1EB5, P1EBA, P1EBB, U2401, U2603, U2604, U2605, U2606, U0111, U185A
Conditions for Setting the DTC
* Battery voltage and current is varying. Requires more than 10 minutes of city driving.
* Hybrid Battery Calculated Resistance is greater than 1 ohms.
Action Taken When the DTC Sets
DTC P0A80 is a type B DTC.
Conditions for Clearing the DTC
DTC P0A80 is a type B DTC.
Diagnostic Aids
* Removing the manual service disconnect before disconnecting the 12 V battery will cause a DTC P0A80 to set.
* With the Vehicle OFF, the hybrid powertrain control module 2 will source 12 mA on the main high voltage interlock circuit for 5 minutes every time a vehicle door is opened.
Reference Information
Schematic Reference
Hybrid Energy Storage Schematics Hybrid Energy Storage Schematics
Connector End View Reference
Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation
Drive Motor Battery System Description Drive Motor Battery System Description
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References Programming and Relearning for scan tool information
Special Tools
EL-48900 - HEV Safety Kit
For equivalent regional tools, refer to Special Tools Tools and Equipment.
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.
Note: Removing the manual service disconnect before disconnecting the 12 V battery will cause a DTC P0A80 to set. Incorrectly performing the High Voltage Disabling procedure steps will cause false DTCs to set and result in misdiagnosis of vehicle components.
1. Verify that no other DTCs are set.
• If any other DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.
2. If DTC P0A80 is set, clear the DTC.
3. Vehicle OFF, disconnect the 12 V battery. Refer to Battery Negative Cable Disconnection and Connection Battery Negative Cable Disconnection and Connection
4. Wait 30 seconds. Reconnect the 12 V battery. Refer to Battery Negative Cable Disconnection and Connection Battery Negative Cable Disconnection and Connection
5. Review and operate the vehicle according to the DTC Conditions for Running. Operate the vehicle for more than 10 minutes of city driving.
6. If DTC P0A80 resets, replace the A4 hybrid/EV battery pack.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Drive Motor Battery Replacement and Shipping Preparation (Volt) Procedures- A4 hybrid/EV battery pack
* Control Module References Programming and Relearning for battery energy control module replacement and hybrid battery interface control modules 1-4, programming and setup for the hybrid/EV battery pack replacement.