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 causes are:
- Connector or terminal malfunction
- EGR boost sensor solenoid valve malfunction
- Open circuit in Green/Yellow wire between EGR boost sensor solenoid valve 2-pin harness connector terminal "B" and PCM 104-pin harness connector terminal No. 47
- Open circuit in White wire between main relay harness connector terminal "C" and EGR boost sensor solenoid valve harness connector terminal "A"
- PCM malfunction
- Short to ground circuit in Green/Yellow wire between EGR boost sensor solenoid valve harness connector terminal "B" and PCM 104-pin harness connector terminal No. 47
- Short to power circuit in Green/Yellow wire between EGR boost sensor solenoid valve harness connector terminal "B" and PCM 104-pin harness connector terminal No. 47