What does a code P1151 mean on a Ford Expedition?


A trouble or error code of P1151 on a Ford Expedition indicates an overheated exhaust oxygen sensor. This may occur because of a problem in the sensor or a problem in another system that overheats the sensor.

A leaking exhaust system, an electrical problem or problems with the fuel system are all possible causes of the P1151 error code. None of these areas are likely to prevent the car from driving properly in the short term. Diagnosis by an experienced mechanic is the best way for Ford Expedition owners to figure out the exact nature of the problem. Ford Expeditions manufactured between 1997 and 1999 have a known issue with an airflow sensor that sometimes causes a P1151 code.

Q&A Related to "What does a code P1151 mean on a Ford Expedition..."
P1151 OBD Trouble Code. NOTICE: The information contained on this site is presented for information only. OBD-Codes.com is not responsible for any actions you take on any vehicles
P1131 and P1151 are for the oxygen sensors. one in the exhaust at the firewall and one at the radiator off the manifold. When both go off though at the same time I would suspect a
ECM determines (based on coolant temp) that too
P1151 Ford. Lack of O2 switches-Bank 2 sensor 1. – ECM could not adjust fuel trim because of a lean or rich condition. Probable Cause[s] Fuel pressure high or low. MAF sensor
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