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
22Original wording in English
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states MIL-on; Coolant leak from the cylinder head gasket, low coolant level, visible coolant leak,…
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states MIL-on; Coolant leak from the cylinder head gasket, low coolant level, visible coolant leak,…
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states Electrical System Error Message, U04A1 [42304], U04A5 [42336], and/or U04A9 [42444] stored in…
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states Electrical System Error Message, U04A1 [42304], U04A5 [42336], and/or U04A9 [42444] stored in…
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P0456, P0442, or P04F0 stored in ECM memory; Customer states Electrical System Error Message, U04A1 [42304], U04A5 [42336], and/or U04A9 [42444] stored in…
VOLKSWAGEN
Reported code forms U04A9
Oil leak from Cylinder Head Cover; Customer states MIL-on, P055F stored in ECM memory with message on cluster stating “please warm engine oil to 176 degrees F”; Customer states key functions (FOB or KESSY) for lock…
Check vehicle applicability
32A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Volkswagen | ATLAS | 2026 |
| Volkswagen | ATLAS | 2025 |
| Volkswagen | ATLAS | 2024 |
| Volkswagen | ATLAS | 2023 |
| Volkswagen | ATLAS | 2022 |
| Volkswagen | ATLAS CROSS SPORT | 2026 |
| Volkswagen | ATLAS CROSS SPORT | 2025 |
| Volkswagen | ATLAS CROSS SPORT | 2024 |
| Volkswagen | ATLAS CROSS SPORT | 2023 |
| Volkswagen | ATLAS CROSS SPORT | 2022 |
| Volkswagen | GOLF R | 2025 |
| Volkswagen | GOLF R | 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.