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.
P0A0B00High Voltage System Interlock Circuit Performance (HVIL)Manufacturer communications
27Original wording in English
BENTLEY
Reported code forms P0A0B00
Software Update | BJB and HV ECUs | Continental GT/GTC/Flying Spur | 25MY (SC26 /06) Software updates must be applied to update the vehicles Baseline Integration Level (BiL). The software update corrects the following…
MERCEDES-BENZ
Reported code forms P0A0B00
Complaint • Vehicle cannot be started • Warning in the instrument cluster related to High-voltage on board electrical system • The following fault codes related to interlock can be found in the High Voltage Control…
BENTLEY
Reported code forms P0A0B00
Software Update | BJB and HV ECUs | Continental GT/GTC/Flying Spur | 25MY (SC25 /10). Software updates must be applied to update the vehicles Baseline Integration Level (BiL). The software update corrects the following…
BENTLEY
Reported code forms P0A0B00
Baseline Software Update from BiL 5.2.1 to BiL 5.3.1 v2 (NAR Only) (SC25/07). Technical background: Software updates must be applied to update the vehicles Baseline Level. The software update corrects the following…
BENTLEY
Reported code forms P0A0B00
Software Update | BiL 5.3.1 v1 to v2 | Flying Spur | 25MY (SC25/11). Software updates must be applied to update the vehicles Baseline Integration Level (BiL). The software update corrects the following Diagnostic…
BENTLEY
Reported code forms P0A0B00
Software Update | BiL 5.3.1 v1 to v2 | Continental GT/GTC | 25MY (SC25/09). Software updates must be applied to update the vehicles Baseline. The software update corrects the following Diagnostic trouble codes: •…
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 |
|---|---|---|
| Bentley | CONTINENTAL GT | 2025 |
| Bentley | CONTINENTAL GT CABRIO | 2025 |
| Bentley | FLYING SPUR | 2025 |
| 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 |
| Mercedes-Benz | EQB 350 4MATIC | 2024 |
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.