OBD-II code · Powertrain (generic, extended)
P2AB8 Wastegate Position Sensor A Circuit Low
Voltage on the wastegate position sensor A signal line is below the expected window. Wire shorted to ground or sensor short.
Is it safe to drive with P2AB8?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySignal wire shorted to ground
- PossibleInternal sensor short
- Less likelyConnector pins corroded - high contact resistance
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Wastegate Position Sensor A, Wiring Harness, Ecm
Related codes
- P2ABBWastegate Position Sensor B Circuit Low
- P2AB5Cold Start Intake Manifold Runner Control Stuck Closed Bank 1
- P2AB6Cold Start Intake Manifold Runner Control Stuck Closed Bank 2
- P2AB7Wastegate Position Sensor A Circuit
- P2AB9Wastegate Position Sensor A Circuit High
- P2ABAWastegate Position Sensor B Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.