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P0134 Code – O2 Sensor Circuit No Activity Detected Sensor 1 Bank 1

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Code P0134 Possible Causes
Front Heated Oxygen Sensor Bank 1 harness is open or shorted
Inappropriate fuel pressure
Intake air leaks may be faulty
Faulty Engine Control Module ECM
Faulty Heated Oxygen Sensor H2OS Bank 1 Sensor 1

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