Reference meaning
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.
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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer communications
2Original wording in English
MERCEDES-BENZ, MERCEDES-MAYBACH
Complaint The trunk lid does not open or close completely and must be operated manually by the customer. The following fault codes are stored in the PTCM control unit: • P1CA000 • B188C2A Cause If the trunk lid is repeatedly opened manually or the vehicle has experienced undervoltage, the trunk lid loses its normalization due to…
MERCEDES-BENZ, MERCEDES-MAYBACH
Complaint The trunk lid does not open or close completely and must be operated manually by the customer. The following fault codes are stored in the Tailgate Control (HKS) control unit: P1CA000 & B188C2A Cause If the trunk lid is repeatedly opened manually or the vehicle has experienced undervoltage, the trunk lid loses its norm…
Check vehicle applicability
42A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mercedes-Benz | AMG GT43 ↗ | 2026 |
| Mercedes-Benz | AMG GT43 ↗ | 2025 |
| Mercedes-Benz | AMG GT55 ↗ | 2025 |
| Mercedes-Benz | AMG GT55 ↗ | 2024 |
| Mercedes-Benz | AMG GT55 4MATIC+ ↗ | 2026 |
| Mercedes-Benz | AMG GT55 4MATIC+ ↗ | 2025 |
| Mercedes-Benz | AMG GT55 4MATIC+ ↗ | 2024 |
| Mercedes-Benz | AMG GT63 ↗ | 2026 |
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.