Can I keep driving?
Drivable in most cases, often in reduced power. Repeated short trips make it worse; a blocked filter can damage the turbo. Book a check soon.
What it means
These codes involve the diesel particulate filter (DPF), which traps soot and burns it off during regeneration. P2453 is the DPF pressure sensor range/performance, P2463 is soot accumulation (restriction), P2002 is DPF efficiency below threshold.
Common symptoms
- Reduced power / limp mode
- DPF warning light
- Frequent fan running or idle speed changes (regeneration attempts)
- Worse fuel economy
Common causes
- Too many short trips (regeneration never completes)
- Faulty differential pressure sensor or cracked sensor hoses
- EGR or injector problems causing excess soot
- Cracked or ash-loaded filter
How we diagnose it
- Read soot and ash load, regeneration history and pressure values
- Inspect sensor hoses and the sensor itself
- Check EGR, injectors and boost for root causes of soot
- Perform a forced regeneration when it is safe, or recommend cleaning/replacement
Where we see it most: Mercedes-Benz BlueTEC, Sprinter, BMW diesel, VW/Audi TDI
A code points to the system that reported a problem, not the exact failed part. Replacing parts based on the code alone often wastes money — testing finds the real cause.