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
4Original wording in English
MAZDA
Reported code forms U0301
Some vehicles may display some (or all) of the following symptoms: • Check engine light on with DTC P061B • Light increase in engine rpms during acceleration • Transmission will not shift past 4th gear • Various U codes…
VOLVO
Reported code forms U030141
This is a Technical Journal: DTC CEM-U030141 with no customer symptom
MAZDA
Reported code forms U0301
Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B Surging on acceleration Transmission will not shift past 4th gear Various U codes (U0401 ABS, U0401, U0415 FSC,…
MAZDA
Reported code forms U0301
Some vehicles may display some (or all) of the following symptoms: Check engine light on wit DTC P061B, Surging on acceleration, Transmission will not shift past 4th gear, Various U codes (U0401 ABS, U0401, U0415 FSC,…
Check vehicle applicability
34A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mazda | CX-5 | 2025 |
| Mazda | CX-5 | 2024 |
| Mazda | CX-5 | 2023 |
| Mazda | CX-5 | 2022 |
| Mazda | CX-5 | 2021 |
| Mazda | CX-5 | 2020 |
| Mazda | CX-5 | 2019 |
| Mazda | CX-5 | 2018 |
| Volvo | S60 | 2018 |
| Volvo | S60 | 2017 |
| Volvo | S60 | 2016 |
| Volvo | S60 | Year not specified |
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.