Did you guys ever think that there may be a short that makes the CEL light come on, but there is nothing wrong that would cause the CEL. We have had three other FORD cars that did this. My family members have had a GM product or two that did it too. For us, the CEL would come on, and stay on. We'd take it to the dealer, and no codes were present. In all three cases, after several trips to the dealer, they found a short in the wiring behind the gauge cluster that caused the CEL to illuminate. Once they corrected the short, everything worked fine.
