Possible Cause
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Connector or terminal malfunction
- MAP sensor malfunction
- MAP sensor signal circuit and MAP sensor ground circuit are shorted to each other
- Open circuit in Red/Black wire between MAP sensor 4-pin harness connector terminal "C" and PCM 30-pin harness connector terminal "2K"
- PCM malfunction
- Short circuit to ground in Yellow/Black wire between MAP sensor 4-pin harness connector terminal "D" and PCM 30-pin harness connector terminal "1J"