runningonfords
Well-Known Member
- Joined
- September 22, 2018
- Messages
- 160
- Reaction score
- 30
- City, State
- Detroit, Michigan
- Year, Model & Trim Level
- 2014 Explorer XLT RRM
So, it was Sunday night last week 6:00 PM, about to drive from Detroit to Washington, D.C. the next morning, my biggest longest haul in this vehicle yet. I'm filling up the tank, topping the washer fluid, checking oil and coolant levels, tire pressure, ready to rock. Run to the grocery store and get back notice the CEL is on. Mad dash about town to find a reader cause I misplaced my bluetooth OBD MX (DOH! its so small) and I get codes P 2196 and 2198, Oxygen sensor signal bias stuck rich bank 1 sensor 1, and bank 2 sensor 1. I erased it, drove to DC and back and haven't seen it again yet. Is it time to replace upstream oxygen sensors? Is my engine running rich for another reason? Code hasn't come back yet, maybe it was a fluke 1 off reading? I think the sensors aren't that much, but they can become seized in place making replacement a pain. I plan to ignore this unless it comes back, anyone with different thoughts? Thanks all.