OBD-II code · Powertrain (generic, extended)
P2462 Diesel Particulate Filter Restriction - Soot Accumulation
The DPF differential pressure sensor reports a backpressure rise consistent with excessive soot accumulation. The filter cannot regenerate fast enough, eventually causing limp mode.
Is it safe to drive with P2462?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyRepeated failed regeneration cycles
- Most likelyHeavily clogged DPF
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Diesel Particulate Filter, Dpf Diff Pressure Sensor
Related codes
- P245FParticulate Filter Pressure Sensor B Circuit Range or Performance
- P2460DPF Restriction — Forced Limited Power
- P2461DPF Restriction — Forced Limited
- P2463Diesel Particulate Filter Restriction — Soot Accumulation
- P2464Diesel Particulate Filter Differential Pressure Too High
- P2465Diesel Particulate Filter Differential Pressure Sensor Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.