PO171 Code


New Member
We have a 2006 Corolla Sport purchased new, currently has 102,000 miles. My wife drives primarily on the highway. About a month a go it threw a PO171 Code. I pulled the little sensor, cleaned the stem and replaced after clearing the code. It stayed off for about a month and then the code returned. The sensor looked clean but I cleaned anyway then replaced and cleared code. I'm wondering if anyone else has experienced this problem and actually found the cause. Thanks for your comments.