P1156 BMW Possible Causes
- Faulty O2 sensor heater, bank 2 sensor 2
- Open or short circuit in the O2 sensor heater wiring for bank 2 sensor 2
- Poor electrical connection in the O2 sensor heater circuit, bank 2 sensor 2
How to Fix BMW Code P1156?
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
- Check engine light on (or service engine soon warning light)
P1156 BMW Meaning
Low voltage in the O2 sensor heater circuit, bank 2 sensor 2 is the generic description for BMW P1156 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the P1156 BMW OBDII code.