What does code P243F mean?

DTC codes / P24xx · Auxiliary emission controls / P243F

P243FParticulate Filter Restriction Soot Accumulation Too High Bank 2

P243F indicates that the engine control module has determined the bank 2 particulate filter has accumulated more soot than the programmed regeneration strategy can safely tolerate. The computer monitors pressure differential and/or modeled soot loading across the filter and sets this code when the calculated restriction exceeds the calibrated threshold for bank 2.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaAuxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.