OBD-II code · Powertrain (generic, extended)
P2DCD Particulate Filter B Incorrect
The ECM detects that the installed particulate filter B does not match the expected type or specification. Wrong replacement part or substrate damage.
Is it safe to drive with P2DCD?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWrong DPF type installed
- PossibleSubstrate damaged or missing
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
- 2–8 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Particulate Filter B
Related codes
- P24FDParticulate Filter A Incorrect
- P2DCAStarter/Generator Excitation Current Intermittent
- P2DCBStarter/Generator Phase X-Y-Z Current Sensor Correlation
- P2DCCStarter/Generator Position Sensor Correlation
- P2DCEControl Pilot Charging Switch B Circuit/Open
- P2DCFControl Pilot Charging Switch B Range/Performance
- P2DD0Control Pilot Charging Switch B Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.