Possible Causes
WARNING: This page is about a different car, the 2003 Mazda MPV and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- EGR boost sensor malfunction.
- Faulty connection at EGR boost sensor or PCM harness connector terminals.
- Open or Short to ground between EGR boost sensor and PCM harness connectors.
- PCM malfunction.