A3 Quattro L4-2.0L Turbo (CBFA) (2009)
8. Verify that the sensor is centered inside of the mounting hole. If the sensor is mounted off-center, remove the bumper and reinstall the sensor.
9. Ensure the sensor sits flush with the bumper. If the sensor is recessed or bulging, remove the bumper and reinstall the sensor.
10. Revaluate the concern:
^ If an issue was identified and the concern was remedied, proceed to step 15.