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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P1AEF-00MCPB High Voltage Battery System Voltage HighManufacturer communications
6Original wording in English
BUICK, CHEVROLET
Reported code forms P1AEF
This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE,…
BUICK, CHEVROLET
Reported code forms P1AEF
This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE,…
BUICK, CHEVROLET
Reported code forms P1AEF
This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE,…
CHRYSLER
Reported code forms P1AEF-00
Loose High Voltage Cable at the Power Inverter Module (PIM) Terminal This bulletin involves inspecting the High Voltage Interlock Loop (HVIL) connector and potentially installing a Power Inverter Module (PIM) kit. The…
BUICK, CHEVROLET
Reported code forms P1AEF
This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE,…
BUICK, CHEVROLET
Reported code forms P1AEF
This Preliminary Information communication provides information to the technician about vehicles that have a Shift to Park message on the Driver Information Center. Technician will find Diagnostic Trouble Codes P1AEE,…
Check vehicle applicability
14A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Buick | LACROSSE | 2019 |
| Buick | LACROSSE | 2018 |
| Buick | LACROSSE | 2017 |
| Buick | LACROSSE | 2016 |
| Chevrolet | MALIBU | 2019 |
| Chevrolet | MALIBU | 2018 |
| Chevrolet | MALIBU | 2017 |
| Chevrolet | MALIBU | 2016 |
| Chevrolet | VOLT | 2019 |
| Chevrolet | VOLT | 2018 |
| Chevrolet | VOLT | 2017 |
| Chevrolet | VOLT | 2016 |
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.