Daughter's CEL came on last night. This morning she told me it ran rough/slow while getting up on freeway. Had her take it to Autozone and received P1151 code. Was told it is o2 sensor. Any help on which one and/or other possible problem/reason for code? Thanks, Nelson
auto zone can tell you which one on their scan tool,i used to work their part time. hopefully thats all it is. not to scare you but ive seen o2s go out due to coolant contamination which is caused by head gaskets. thats a pretty common problem on the older 3.8s. my moms 95 had new head gaskets put on by ford, 2 months later she had a rod knocking. ford replaced the engine after going back and forth for a while.