What are the possible causes of the MINI P12B8 code?
- Faulty ambient pressure sensor
- Ambient pressure sensor harness is open or short-circuited
- Poor electrical connection in the ambient pressure sensor circuit
| How to fix the MINI P12B8 code?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
| What are the possible symptoms of the MINI P12B8 code?
- Check Engine Light on (or Service Engine Soon warning light)
| What does the MINI P12B8 code mean?
The diagnostic function monitors the voltage at the boost pressure sensor. The ECM sets the OBDII code when the ambient pressure sensor does not meet factory specifications.