P1139 BMW Possible Causes
- Faulty HO2S, Bank 1 Sensor 2
- Open or short circuit in Bank 1 Sensor 2 HO2S wiring harness
- Poor electrical connection in Bank 1 Sensor 2 HO2S circuit
How to Fix BMW P1139 Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or engine service warning light soon)
P1139 BMW Meaning
High voltage in O2 sensor heater circuit, Bank 1 Sensor 2 is the generic description for Bmw P1139 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the P1139 Bmw OBDII code.