Engine and gearbox (P)
P2453: DPF pressure sensor issue
The Diesel Particulate Filter (DPF) pressure sensor is not providing a plausible signal. This could affect the DPF's ability to regenerate properly.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine warning light on
- Reduced engine performance
- Increased fuel consumption
- Possible smoke from exhaust
Common causes
- Blocked sensor pipes
- Failed sensor
- Wiring fault
How to check it yourself
- Inspect pressure pipes for blockage
- Check sensor connections and wiring
- Compare sensor reading with known pressure
Can I keep driving?
The car can be driven, but it is advisable to fix the issue soon to avoid further problems.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer