P2274 FORD - Oxygen Sensor Signal Stuck Lean Bank 1 Sensor 3
- Faulty O2 Sensor Bank 1 Sensor 3
- Exhaust leaks
- O2 Sensor Bank 1 Sensor 3 harness is open or shorted
- O2 Sensor Bank 1 Sensor 3 circuit poor electrical connection
- Engine Light ON (or Service Engine Soon Warning Light)
P2274 Ford DescriptionThe downstream heated oxygen sensor (HO2S) is forced rich and lean and monitored by the Powertrain Control Module (PCM). The test fails if the PCM does not detect the output of the HO2S in a calibrated amount of time.
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