What are the possible causes of code P12A3?
- Faulty Manifold Absolute Pressure (MAP) sensor
- Manifold Absolute Pressure (MAP) sensor harness is open or shorted
- Poor electrical connection in the Manifold Absolute Pressure (MAP) sensor circuit
How to repair code P12A3?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What are the possible symptoms of code P12A3?
- Check Engine Light on (or Service Engine Soon warning light)
What does code P12A3 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.