1998 Ford Expedition Repair Question
Topics covered: Sensor, Auto parts, Check engine light.
Mileage: 212 miles.
Mileage: 212 miles.
Asked on November 13, 2012
Ford Expedition Sensor Problem
My check engine light came on, so I ran the diagnostic at an auto parts store and it said bank 1 sensor 1 had to be replaced. I know that means that it's the upstream oxygen sensor but I don't know where it goes, can you send me instructions and a diagram please.
Asked by (pending member)Answer
Replied on November 13, 2012
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?