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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0A1B94Drive Motor "A" Control Module Unexpected Operation
P0A1B94Drive Motor A Control Module Unexpected Operation
P0A1B1FGenerator Control Module Circuit Intermittent
Manufacturer communications
21Original wording in English
TOYOTA
Some 2025 – 2026 model year Camry HV vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1B94 (Drive Motor A Control Module Unexpected Operation) stored. The logic in the Motor Generator Control ECU has been modified to address this condition.
TOYOTA
Some 2025 — 2026 model year Camry HV vehicles may exhibit a MIL on condition with DTC P0A1B94(Drive Motor "A" Control Module Unexpected Operation) stored. The logic in the MG ECU has been modified to address this condition.
LAND ROVER
Certain vehicles are displaying a loss of drive, indicated by a 'loss of drive' warning in red on the instrument panel cluster and the Malfunction Indicator Lamp (MIL) is illuminated. The fault occurs during start-up and only with the vehicle stationary. The Diagnostic Trouble Code (DTC) P0A1B-00 is stored in the Electric Power …
AUDI
This bulletin provides information when "Electrical system fault" is displayed in the instrument cluster, DTC: P18F100, P0A1B00, U140500.
Check vehicle applicability
22A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | AUDI ↗ | Year unknown |
| Audi | Q4 E-TRON ↗ | 2024 |
| Audi | Q4 E-TRON ↗ | 2023 |
| Audi | Q4 E-TRON ↗ | 2022 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2024 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2023 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2022 |
| Audi | Q5 ↗ | 2020 |
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.