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.
B1A8A-00Multi-Module VIN Handshake FailureB1A8A-00Multi-Module VIN Handshake FailureManufacturer communications
11Original wording in English
DODGE
Reported code forms B1A8A-00
Powertrain Modules Software Update Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic Trouble Codes (DTCs): ● P0AA7-00…
DODGE
Reported code forms B1A8A-00
RSU With Additional Sleep Cycles for HV Battery Integrity Check - Flash: Battery Pack Control Module (BPCM) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may…
DODGE
Reported code forms B1A8A-00
RSU With Additional Sleep Cycles for HV Battery Integrity Check Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic…
DODGE
Reported code forms B1A8A-00
Flash: Battery Pack Control Module (BPCM) Updates 6B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic Trouble Codes…
DODGE
Reported code forms B1A8A-00
Flash: Battery Pack Control Module (BPCM) Updates 11B3 Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic Trouble Codes…
DODGE
Reported code forms B1A8A-00
RSU With Additional Sleep Cycles for HV Battery Integrity Check Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more the following Diagnostic…
Check vehicle applicability
18A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | E-TRON | 2019 |
| Audi | E-TRON SPORTBACK | 2020 |
| Audi | Q8 E-TRON | 2025 |
| Audi | Q8 E-TRON | 2024 |
| Audi | Q8 SPORTBACK E-TRON | 2025 |
| Audi | Q8 SPORTBACK E-TRON | 2024 |
| Audi | SQ8 E-TRON | 2025 |
| Audi | SQ8 E-TRON | 2024 |
| Audi | SQ8 SPORTBACK E-TRON | 2024 |
| Chrysler | 300 | 2013 |
| Chrysler | 300 | 2012 |
| Dodge | CHARGER | 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.