What does code P236C mean?

Q: What does code P236C mean?

Cylinder 12 Pressure Too High. P236C indicates that the engine control module (ECM) has detected an excessively high pressure reading from the cylinder 12 pressure sensor during the combustion cycle. This code is typically found on engines equipped with in-cylinder pressure sensors, where the ECM uses the signal to fine-tune fuel injection and ignition timing; when the signal exceeds the expected threshold, the ECM sets this trouble code.

DTC codes / P23xx · Ignition system and misfire / P236C

P236CCylinder 12 Pressure Too High

P236C indicates that the engine control module (ECM) has detected an excessively high pressure reading from the cylinder 12 pressure sensor during the combustion cycle. This code is typically found on engines equipped with in-cylinder pressure sensors, where the ECM uses the signal to fine-tune fuel injection and ignition timing; when the signal exceeds the expected threshold, the ECM sets this trouble code.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaIgnition system and misfire

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