I've got a '97 Ford Exp. XLT with 126k miles. My "Check Engine" light is one. I took it to AutoZone about a week ago and they told me error code P0171 was coming up. They reset the code for me and the check engine light came back on again within a day. I took it to AutoZone again and the same code P0171 is coming up. They said this is because one or both of the O2 sensors are bad or clogged. I took them off and both are clean to the eye. Is there something more common for this error? Any help is appreciated. Please email me. Thanks.
- posted
20 years ago