What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
CHEVROLET
Reported code forms P0AA1
Service Update. Certain vehicles may exhibit the high voltage bulkhead battery disconnect unit (BBDU) positive and/or negative contactors or relays, permanently or intermittently welded in the closed position.…
CHEVROLET
Reported code forms P0AA1
This Preliminary information communicates that a program to repair the P0AA1 and P0AA4 is now available. Under specific unique conditions when the 12V battery voltage drops below a threshold, these DTCs may set.
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Chevrolet | VOLT | 2019 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.