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:
- CKP sensor is dirty
- CKP sensor malfunction
- CKP sensor pulse wheel malfunction
- Connector or terminal malfunction
- Open circuit between CKP sensor 2-pin harness connector terminal "A" (Brown/Blue wire) and PCM 104-pin harness connector terminal No. 22 (Green wire)
- Open circuit between CKP sensor harness connector terminal "B" (White/Red wire) and PCM 104-pin harness connector terminal No. 21 (Blue wire)
- PCM malfunction
- Short circuit between CKP sensor harness connector terminal "A" (Brown/Blue wire) and terminal "B" (White/Red wire)
- Short to ground circuit between CKP sensor harness connector terminal "A" (Brown/Blue wire) and PCM 104-pin harness connector terminal No. 22 (Green wire)
- Short to ground circuit between CKP sensor harness connector terminal "B" (White/Red wire) and PCM 104-pin harness connector terminal No. 21 (Blue wire)