Possible Causes
WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
- CKP sensor is dirty.
- CKP sensor malfunction.
- CKP sensor pulse wheel malfunction.
- Connector or terminal malfunction.
- Open or short circuit between CKP sensor and PCM.