Technical Definition:

O2 Circuit Low Voltage (Bank 2, Sensor 1)

Technical Description:

Possible Causes:

• Faulty o2 oxygen sensor
• Short to voltage on O2 signal circuit
• High resistance or open on O2 signal circuit

Possible Symptoms:

O2 Sensor Circuit Low Voltage Bank 2 Sensor 1

Possible Solutions:

• Replace faulty sensor
• Repair short, open, or high resistance on o2 signal circuit

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Front Heated Oxygen Sensor Bank 2
– Front Heated Oxygen Sensor Bank 2 harness is open or shorted
– Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
– Inappropriate fuel pressure
– Faulty fuel injectors
– Intake air leaks may be faulty
– Exhaust gas leaks

Specific Makes:

– High Fuel Consumption
– Excessive smoke from Exhaust