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P2271 Diagnostic Trouble Code Discussion for November 2017

Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Rich

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Trouble Ticket Help Requests for DTC P2271
Help Request Posted
2004 Ford Explorer XLT 4.0L Cuts out, Stall VIN: 1FMDU73E74
P2271: Bank 1 sensor2 stuck rich. ... (r/s),started up.wouldnt idle.replaced intake gaskets again,started wouldmn`t run except at 1500 rpm. Ran koeo,koer tests got a p1408 egr code,replaced egr module,it runs,idles crappy,dtc`s are p2197,p2271,p2273.theres n...
November 26, 2017