Possible Causes
WARNING: This page is about a different car, the 2003 Mazda B4000, 2003 Mazda B3000, and 2003 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Contaminated or damaged sensor.
- Crossed sensor wires.
- Exhaust leaks.
- Pinched, shorted or corroded wiring or connector pins.