OBD-II code · Powertrain (generic, extended)
P243B Particulate Filter Restriction Forced Limited Power Bank 2
Particulate Filter Restriction Forced Limited Power Bank 2: the control module has detected this fault condition.
Is it safe to drive with P243B?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyDPF heavily clogged
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
- 1–8 h
- Emissions test
- Likely to fail
- Parts involved
- Dpf B2
Related codes
- P246CParticulate Filter Restriction Forced Limited Power Bank 1
- P2438AIR System Air Flow or Pressure Sensor Circuit High Bank 2
- P2439AIR System Air Flow or Pressure Sensor Circuit Intermittent or Erratic Bank 2
- P243AParticulate Filter Restriction Ash Accumulation Bank 2
- P243CParticulate Filter Regeneration Frequency Bank 2
- P243DParticulate Filter Regeneration Duration Bank 2
- P243EParticulate Filter Regeneration Incomplete Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.