P1157 GMC Possible Causes
- Faulty O2 sensor heater, bank 2 sensor 2
- O2 sensor heater bank 2 sensor 2 harness is open or shorted
- O2 sensor heater circuit, bank 2, sensor 2 circuit poor electrical connection
How to Fix GMC Code P1157?
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)
P1157 GMC Meaning
HO2S Bank 2 Sensor 2 System Lean or Low Voltage is the generic description for GMC code P1157, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about OBDII code P1157 GMC.