P0140

Technical Definition:

O2 Circuit No Activity Detected (Bank 1, Sensor 2)

Trouble Code: P0140
Address: 0x0140
System: Powertrain
Subsystem:
Technical Description:

Possible Causes:

Possible Symptoms:

O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Rear Heated Oxygen Sensor Bank 1
– Rear Heated Oxygen Sensor Bank 1 harness is open or shorted
– Rear Heated Oxygen Sensor Bank 1 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

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