P1139 MINI Possible Causes
- Faulty HO2S, Bank 1 Sensor 2
- Open or short circuit in HO2S Bank 1 Sensor 2 wiring
- Poor electrical connection in HO2S Bank 1 Sensor 2 circuit
How to Fix P1139 MINI 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 MINI Meaning
High voltage in O2 sensor heater circuit, Bank 1 Sensor 2 is the generic description for P1139 Mini code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about the P1139 Mini OBDII code.