02 sensor heater circuit on 1989 ford taurus

#1

Check engine light on, my OBC shows bank2 sensor2 circuit malfunction, is this located before or after the converter not sure were to look. thanks Bob Steen

#2

Bank 2 is the opposite side of Bank 1 which is related to number 1 cylinder. Sensor 1 for each bank is before the CAT and sensor 2 for each side is after the CAT.

There has recently been a couple of posts on this site pertaining to Ford heater circuit problems. The problem has been with the ECU or PCM module. One poster found a replacement unit at a salvage yard for $25 dollars and fixed the trouble. You can do a search for the thread “Sordid Tale”. Grab some coffee and be ready to sit for awhile.

#3

Post the exact code; then, we can tell you (hopefully) what you can do.