Possible Causes
WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Contamination internal to FTP sensor connector.
- Damaged PCM.
- FTP circuit shorted to ground or SIG RTN.
- Damaged FTP sensor.