P2271 Diagnostic Trouble Code Discussion for July 2020
Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Biased Rich
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| Help Request | Posted | |
| 2008 Ford F-150 Lariat 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTPW14V48 P2271: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2. We have a problem child here that we're stuck on. This truck came in for a safety & emissions test and passed both (OBD2 emissions). We noticed timing chain noise at idle & suggest a new timing kit, customer said go ahead. replaced components along... |
July 14, 2020 | |
| 2010 Audi A4 Quattro Avant 2.0L Rich VIN: WAUWFAFL2A P2271: O2 sensor stuck rich. We need some help with this Audi A4. It has a rich condition and we can't seem to find the cause. It had a code for the O2 sensor (fuel ratio sensor) so that was replaced. At a previous visit the vehicle had both the crankcase vent and the oil separator re... |
July 16, 2020 |
