What does code P2458 mean?

Q: What does code P2458 mean?

DPF Regeneration Duration. P2458 indicates that the powertrain control module has detected a diesel particulate filter regeneration event that ran longer than the manufacturer's calibrated time limit, or that the expected duration was not achieved within the allowed window. The computer monitors the pressure differential across the filter and exhaust temperature sensors during an active regeneration, and it sets this code when the burn-off process fails to complete in the expected time.

DTC codes / P24xx · Auxiliary emission controls / P2458

P2458DPF Regeneration Duration

P2458 indicates that the powertrain control module has detected a diesel particulate filter regeneration event that ran longer than the manufacturer's calibrated time limit, or that the expected duration was not achieved within the allowed window. The computer monitors the pressure differential across the filter and exhaust temperature sensors during an active regeneration, and it sets this code when the burn-off process fails to complete in the expected time.

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.