What does code P2AB8 mean?

Q: What does code P2AB8 mean?

Wastegate Position Sensor A Circuit Low. P2AB8 means the powertrain control module (PCM) has detected a low-voltage condition on the signal circuit from wastegate position sensor A, which is the feedback sensor that tells the computer how far the turbocharger's wastegate valve is actually open. The PCM expects a voltage within a calibrated range for the current commanded wastegate position, and a reading below the lower threshold for a set time triggers this code.

DTC codes / P2Axx · Hybrid propulsion / P2AB8

P2AB8Wastegate Position Sensor A Circuit Low

P2AB8 means the powertrain control module (PCM) has detected a low-voltage condition on the signal circuit from wastegate position sensor A, which is the feedback sensor that tells the computer how far the turbocharger's wastegate valve is actually open. The PCM expects a voltage within a calibrated range for the current commanded wastegate position, and a reading below the lower threshold for a set time triggers this code.

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.