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:
- MAF/IAT sensor malfunction
- Open circuit in Blue/Black wire between MAF/IAT sensor 5-pin harness connector terminal "D" and PCM 30-pin harness connector terminal "2E"
- Open circuit in Brown wire between MAF/IAT sensor 5-pin harness connector terminal "E" and PCM 30-pin harness connector terminal "2H"
- PCM malfunction
- Poor connection at MAF/IAT sensor 5-pin harness connector or PCM 30-pin harness connector
- Short to power circuit in Blue/Black wire between MAF/IAT sensor 5-pin harness connector terminal "D" and PCM 30-pin harness connector terminal "2E"