Wastegate Position Sensor B Circuit Low

Where it lives

For P2ABB, the sensor sits on the circuit this code reports. The description of P2ABB reports a fault at the sensor.

Check these first

• A short to ground on the wastegate position sensor B signal wire
• A failed wastegate position sensor B
• A chafed sensor B harness grounded on the turbo heat shield
• A wastegate actuator stuck so sensor B never reaches its range

What to do next

1. Scan all modules and read wastegate position sensor B voltage
2. Inspect the wastegate position sensor B harness for chafing on hot parts
3. Test the sensor B signal wire for a short to ground
4. Verify the wastegate actuator stroke with a scan tool command
5. Replace wastegate position sensor B if the harness tests clean
6. Clear the code and retest

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