What does code P244A mean?

Q: What does code P244A mean?

Diesel Particulate Filter Differential Pressure Too Low. P244A means the engine computer has calculated that the pressure difference across the diesel particulate filter (DPF) is lower than it should be during a commanded regeneration or flow test. The filter appears to be flowing too freely, which usually points to a missing, cracked, or gutted filter, a disconnected pressure hose, or a faulty differential pressure sensor rather than a blocked DPF.

DTC codes / P24xx · Auxiliary emission controls / P244A

P244ADiesel Particulate Filter Differential Pressure Too Low

P244A means the engine computer has calculated that the pressure difference across the diesel particulate filter (DPF) is lower than it should be during a commanded regeneration or flow test. The filter appears to be flowing too freely, which usually points to a missing, cracked, or gutted filter, a disconnected pressure hose, or a faulty differential pressure sensor rather than a blocked DPF.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.