What are the possible causes of the BMW P12A3 code?
- Faulty Manifold Absolute Pressure (MAP) sensor
- Open or short circuit in the Manifold Absolute Pressure (MAP) sensor harness
- Poor electrical connection in the Manifold Absolute Pressure (MAP) sensor circuit
How to fix the BMW P12A3 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 BMW P12A3 code?
- Check Engine Light on (or Service Engine Soon warning light)
What does the BMW P12A3 code mean?
The Engine Control Module (ECM) monitors the Manifold Absolute Pressure (MAP) sensor. The ECM sets the OBDII code when the Manifold Absolute Pressure (MAP) sensor does not meet factory specifications.