What does code P237F mean?

Q: What does code P237F mean?

Exhaust Heat Exchanger Bypass Valve A Control Performance. P237F indicates that the powertrain control module (PCM) has detected a performance problem with the exhaust heat exchanger bypass valve A control circuit. The PCM commands the valve to a specific position and monitors the circuit or the resulting temperature change, and it sets this code when the response does not match the expected behavior within a calibrated time.

DTC codes / P23xx · Ignition system and misfire / P237F

P237FExhaust Heat Exchanger Bypass Valve A Control Performance

P237F indicates that the powertrain control module (PCM) has detected a performance problem with the exhaust heat exchanger bypass valve A control circuit. The PCM commands the valve to a specific position and monitors the circuit or the resulting temperature change, and it sets this code when the response does not match the expected behavior within a calibrated time.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.