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:
- Damaged FTP sensor.
- Damaged PCM.
- FTP circuit open.
- FTP shorted to VREF or VPWR.
- SIG RTN circuit open.
- VREF shorted to VPWR.