P2562
Turbocharger Boost Control Position Sensor A Circuit
General electrical fault on the turbocharger boost control position sensor A — the feedback sensor on the wastegate or VGT actuator (often a contactless Hall sensor). Without valid position feedback the ECM cannot close the loop on boost control and falls back to open-loop duty cycle.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Common causes
Ordered by how often each turns out to be the cause.
- Open or shorted wiring to the position sensorCommon
- Failed Hall element after thermal cyclingPossible
Parts involved
- Turbo Actuator Position Sensor A
- Sensor Wiring
P2562 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.