My car is running fine and then the check engine goes on. I turn the car off and then back on and the check engine comes back on and the car is still running fine. I take the car to Autozone and they tell me the code for the check engine light is P1131. The only problem is Autozone does not know what P1131 means. What does P1131 mean?
When my car was under warrantee I had a similar problem and Ford fixed the problem by replacing the DPFE sensor. Could the DPFE sensor be the problem? What is the DPFE sensor?
Thanks for any help!
