In barstool talk:
the rear oxy is toast. get a new one.
if v6 engine, then post that, and we an tell which it is. but is bank1 no matter, bank one means side of engine that has #1 cylinder
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Engine Control Module (ECM) (NEVER)
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