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