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DTC codes / P2Axx · Hybrid propulsion / P2ABA

P2ABAWastegate Position Sensor B Circuit

P2ABA indicates that the powertrain control module (PCM) has detected an abnormal condition on the electrical circuit for the wastegate position sensor B, which is the second sensor on a turbocharger equipped with a dual wastegate or twin-turbo arrangement. The PCM monitors the sensor's signal voltage and flags this code when the voltage falls outside the expected range for the current operating conditions, indicating an open circuit, short to ground, short to power, or a sensor that is not responding correctly.

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.

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