P1156 BUICK Possible Causes
- Faulty O2 sensor heater, Bank 2 Sensor 1
- O2 sensor heater, Bank 2 Sensor 1 harness is open or shorted
- O2 sensor heater circuit, Bank 2 Sensor 1 circuit poor electrical connection
How to Fix P1156 BUICK 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 service engine soon warning light)
P1156 BUICK Meaning
HO2S Rich Average Bank 2 Sensor 1 is the generic description for P1156 Buick code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about Buick OBDII P1156 code.