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Both pertain to the heated o2 sensor// bank 2 -sensor 2 -their is a malfunction with the heated sensor behind the cat converter either wiring problem or bad sensor--check wiring and or sensor for problem
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Possible causes- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted - Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection - Faulty Rear Heated Oxygen Sensor Bank 2 - Inappropriate fuel pressure - Faulty fuel injectors - Intake air leaks may be faulty - Exhaust gas leaks
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