What does code P2CE9 mean?

DTC codes / P2Cxx · Hybrid propulsion / P2CE9

P2CE9Particulate Filter Pressure Sensor C Circuit Intermittent/Erratic

P2CE9 means the engine computer has seen the particulate filter pressure sensor C circuit behave intermittently or erratically, so the signal jumps around or drops out instead of tracking soot loading smoothly. The computer compares the sensor voltage against expected behavior and flags this code when the readings are unstable rather than simply out of range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

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