Car Questions
RepairPal is your advocate for car care advice and guidance

Why won't my catalyst monitor and o2 sensor monitor clear?

(1997 Dodge Ram 1500)
in Fenton, MO on March 15, 2013
I replaced the catalytic converter and o2s11 and have driven the truck for almost 300 miles. The o2 sensor heater monitor cleared, but the o2 sensor monitor and catalyst monitor have not. There are no codes coming up on the scanner. The battery is about two years old and has given me zero problems. The starter, on the other hand, needs to be replaced. Could this be why it won't reset?
Displaying 1 answers & 1 comments
Popular Answer
on March 15, 2013
sensor connections may be dirty. mechanics miss this problem sometimes.
on March 15, 2013
I'll try that, thanks.
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide. Learn more

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
truck has 98,600 miles. now beginning to slip. what can I do to prolong not replacing transmission.. at what milea...
Turned the ignition on and then the heater, Turned the headlights on and everything shut down ! Nothing at all work...
Didn't find what you were looking for?