P2270 Diagnostic Trouble Code Discussion for December 2016
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Lean
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| Help Request | Posted | |
| 2004 Ford Focus ZX3 2.3L Poor Idle Quality, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3FAFP31Z94 P2270: B1S1 O2 sensor stuck lean. Car starts up rough when cold with the High\low idle for a bit,I can tap gas and it will smooth out.STFT goes to + 42%,LTFT will start going up to about + 8%, with no O2 sensor switching.If I tap the gas several times O2's start switching and runs fine. If I l... |
December 19, 2016 |
