Possible Causes
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 cause are:
- OCV malfunction
- PCM malfunction
- Poor connection of harness connectors at PCM and/or OCV
- Short circuit to power in Brown/Yellow wire between OCV harness connector terminal "A" and PCM 30-pin harness connector terminal "4M"