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
5Original wording in English
MERCEDES-BENZ
Reported code forms P0C3B00
Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message,…
MERCEDES-BENZ
Reported code forms P0C3B00
Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message,…
MERCEDES-BENZ
Reported code forms P0C3B00
Complaint 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message,…
MERCEDES-BENZ
Reported code forms P0C3B00
Complaint: 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message,…
MERCEDES-BENZ
Reported code forms P0C3B00
Complaint: 243: Red 12V battery message, white HV warning message, warning message in the IC and if applicable for vehicles with BMS30EB02 yellow HV drive system 465: Red 12V battery message, white HV warning message,…
Check vehicle applicability
17A 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 G63 | 2025 |
| Mercedes-Benz | EQB 250 | 2024 |
| Mercedes-Benz | EQB 250 | 2023 |
| Mercedes-Benz | EQB 250 | 2022 |
| Mercedes-Benz | EQB 250+ | 2025 |
| Mercedes-Benz | EQB 250+ | 2024 |
| Mercedes-Benz | EQB 250+ | 2023 |
| Mercedes-Benz | EQB 300 4MATIC | 2025 |
| Mercedes-Benz | EQB 300 4MATIC | 2024 |
| Mercedes-Benz | EQB 300 4MATIC | 2023 |
| Mercedes-Benz | EQB 300 4MATIC | 2022 |
| Mercedes-Benz | EQB 350 4MATIC | 2025 |
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.