Code P0042 Possible Causes
Heated Oxygen Sensor H2OS Bank 1 Sensor 3 fuse
Heated Oxygen Sensor H2OS Bank 1 Sensor 3 is open shorted to ground
Heated Oxygen Sensor H2OS Bank 1 Sensor 3 poor electrical connection
Faulty Engine Control Module ECM
Faulty Heated Oxygen Sensor H2OS Bank 1 Sensor 3
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