What does code P236E mean?

Q: What does code P236E mean?

Cylinder 12 Pressure Variation High. P236E indicates that the powertrain control module has detected an excessive variation in combustion pressure for cylinder 12, typically by comparing crankshaft speed fluctuations or ionization signals against expected values. The computer flags this code when the measured pressure contribution from cylinder 12 deviates beyond a calibrated threshold, indicating a mechanical or fueling imbalance.

DTC codes / P23xx · Ignition system and misfire / P236E

P236ECylinder 12 Pressure Variation High

P236E indicates that the powertrain control module has detected an excessive variation in combustion pressure for cylinder 12, typically by comparing crankshaft speed fluctuations or ionization signals against expected values. The computer flags this code when the measured pressure contribution from cylinder 12 deviates beyond a calibrated threshold, indicating a mechanical or fueling imbalance.

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.