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.
P0C4ADrive Motor A Inverter Over Temperature
Manufacturer communications
12Original wording in English
CHRYSLER
"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0A78 - Drive Motor A Inverter Performance. ● P0A79 - Drive Moto…
AUDI
This bulletin provides information when DTCs P0C4A00, P2B2800 and/or P0CFF00 Stored in the Hybrid Battery Management control unit.
AUDI
This bulletin provides information for when DTCs P0C4A00, P2B2800, and/or P0CFF00 is stored in the Hybrid Battery Management control unit.
BENTLEY
Bentayga/New Flying Spur - DTC P0C4A00 Hybrid/EV Battery Pack Coolant Pump 'A' Control Performance within address 8C. Customer statement / workshop findings - Speed limitation noticeable when driving in EV mode (Restricting the vehicle speed to approximately 30mph/48kph) - Refer also to the video on the Bentley Hub referencing T…
Check vehicle applicability
27A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| 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 |
| Bentley | BENTAYGA HYBRID ↗ | 2023 |
| Bentley | BENTAYGA HYBRID ↗ | 2022 |
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.