What does code P24A3 mean?

Q: What does code P24A3 mean?

Particulate Filter Restriction Soot Accumulation Bank 2. P24A3 indicates that the powertrain control module has calculated excessive soot loading in the bank 2 particulate filter, typically by comparing measured exhaust backpressure against expected values for the current operating conditions. The filter is approaching or has exceeded its designed soot capacity, which can eventually restrict exhaust flow and trigger a regeneration request or a limp-home strategy.

DTC codes / P24xx · Auxiliary emission controls / P24A3

P24A3Particulate Filter Restriction Soot Accumulation Bank 2

P24A3 indicates that the powertrain control module has calculated excessive soot loading in the bank 2 particulate filter, typically by comparing measured exhaust backpressure against expected values for the current operating conditions. The filter is approaching or has exceeded its designed soot capacity, which can eventually restrict exhaust flow and trigger a regeneration request or a limp-home strategy.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.