Question about 2006 BMW 325i
P0140 BMW - O2 Sensor Circuit Low Voltage Bank 1 Sensor 2
Possible causes - 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
Replacing the Rear Heated Oxygen Sensor Bank 1 usually takes care of the problem
Posted on Jan 15, 2015
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Posted on Jan 02, 2017
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