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P0151 Code – O2 Sensor Circuit Low Voltage Bank 2 Sensor 1

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Code P0151 Possible Causes
Front Heated Oxygen Sensor Bank 2 harness is open or shorted
Fuel contamination
Low or high fuel system pressure
Engine vacuum leaks
Exhaust gas leaks
Faulty Front Heated Oxygen Sensor Bank 2
Faulty fuel injectors
Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection

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