1998 Ford Expedition Repair Question
Ford Expedition Sensor Problem
Diagnostic fault codes never say to replace parts. They only indicate the circuit or system that needs further diagnosis. In the case of the oxygen sensors, there's about a dozen different codes related to them and most have to do with problems in the wiring or that the sensor is reporting a bad condition. You don't automatically replace the sensor when it has detected something wrong. Do you know the exact code number or the exact description?
17,274 answers provided