Code 51

DRB displays O2S STAYS BELOW CENTER (LEAN), LEFT O2S SIGNAL STAYS BELOW CENTER (LEAN), or RIGHT O2S SIGNAL STAYS BELOW CENTER (LEAN). Condition is: oxygen sensor input indicates lean air/fuel ratio condition during engine operation.

DRB displays LEAN OPERATION AT WIDE OPEN THROTTLE. Condition is: lean air/fuel mixture detected during Wide Open Throttle (WOT) operation. Drain and remove fuel tank. Clean fuel tank to remove contaminants. Replace inlet strainer on fuel pump module.