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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Tests W/Codes - 2.5L Flex Fuel) >> CODES/MESSAGES (Note: For DTC table, see TEST TC-1A under "Self-Diagnostics." >> Code 51

Code 51

WARNING: This page is about a different car, the 1994 Plymouth Acclaim and 1994 Dodge Spirit. However, it is still accessible from the selected car via links, so may be relevant.

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.

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