What does code P23AA mean?

Q: What does code P23AA mean?

Turbocharger Bypass Valve A Stuck. P23AA means the engine computer has commanded the turbocharger bypass valve (often called a diverter or recirculation valve) to move, but the valve position sensor or feedback circuit indicates it is stuck and not responding. The computer detects this by comparing the commanded valve position with the actual position reported by the valve's integrated sensor, and it sets the code when the two disagree beyond a calibrated threshold for a set time.

DTC codes / P23xx · Ignition system and misfire / P23AA

P23AATurbocharger Bypass Valve A Stuck

P23AA means the engine computer has commanded the turbocharger bypass valve (often called a diverter or recirculation valve) to move, but the valve position sensor or feedback circuit indicates it is stuck and not responding. The computer detects this by comparing the commanded valve position with the actual position reported by the valve's integrated sensor, and it sets the code when the two disagree beyond a calibrated threshold for a set 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.