• The response of the O2 sensor voltage signal is out of expected range

Possible Symptoms:

  • Vehicle may idle or run rough

  • Possible higher fuel consumption

  • Engine Surge

  • Vehicle may not shift at all

Possible Causes:

  • Faulty Front Heated Oxygen Sensor Bank 1

  • Front Heated Oxygen Sensor Bank 1 harness is open or shorted

  • Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection

  • Inappropriate fuel pressure

  • Faulty fuel injectors

  • Intake air leaks may be faulty

  • Exhaust gas leaks

Related Parts:

  • Oxygen Sensor: This is one of the parts that fails very commonly. It measures the amount of oxygen to ensure proper combustion. Problems in the Oxygen Sensor lead to poor fuel economy

Possible Solutions:

  • Replacing the O2 Sensor 1 usually takes care of the problem

  • Checks the O2 sensor wiring and the harness connections for any corrosion. Repairs or replaces any connections with problems