04 4x4 4.7, 144k, truck runs great but CEL and trouble codes for all four O2 sensors (p0135, p0141, p0155, p0161). I need to get the truck inspected and the CEL is going to be a problem. Seems odd that all four sensors would go bad at same time so i suspect there may be another issue. O2 sensors were replaced apps 20k ago.
Anybody else have a similar problem?
Thanks
Anybody else have a similar problem?
Thanks