Technical Definition:

O2 Circuit No Activity Detected (Bank 2, Sensor 3)

Technical Description:

Possible Causes:

• Bad Bank 2, position 3, o2 sensor
• Wiring problem, melted harness, broken connectors, etc.
• Bad PCM

Possible Symptoms:

• Malfunction Indicator Lamp on
• May idle or drive poorly
• Fuel economy may decrease

O2 Sensor Circuit No Activity Detected Bank 2 Sensor 3

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Heated Oxygen Sensor Bank 2 Sensor 3
– Heated Oxygen Sensor Bank 2 Sensor 3 harness is open or shorted
– Heated Oxygen Sensor Bank 2 Sensor 3 circuit poor electrical connection

Specific Makes:

– High Fuel Consumption
– Excessive Smoke from Exhaust