P2196 Diagnostic Trouble Code Discussion for November 2025
Heated Oxygen Sensor (Bank 1 Sensor 1) Stuck Rich
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| Help Request | Posted | |
| 2015 Ford F-150 Lariat 3.5L Excessive Emissions, Poor Idle Quality, Hesitation, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1FTEW1EG7F P2196: Bank 1 stock rich. Came in with code for o2 sensor b1s1 dead and o2 sensor b2s1 stock rich, changed the b1 o2 sensor, both started showing stock rich codes. Tried a air charge sensor- no results, unplugging the map sensor - no results, opened up the purge valve - seemed like... |
November 05, 2025 |
