P0157
O2 Sensor Circuit Low Voltage Bank 2 Sensor 2
1995-2005 Pontiac Sunfire 2.2L I4
Moderate SeverityPowertrainGeneric (SAE)
Description
Low voltage from the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
Common Causes
- Faulty sensor
- Short to ground
- Exhaust leak
Diagnostic Steps
- Test voltage
- Check for shorts
Repair Notes
Replace sensor.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0157 on Other Vehicles
Pontiac Aztek
2001-2005 3.4L V6
Pontiac Bonneville
1990-1999 3.8L V6
Pontiac Bonneville
2000-2005 3.8L V6
Pontiac Bonneville GXP
2000-2005 4.6L V8
Pontiac Bonneville GXP
2000-2005 4.6L V8 Northstar
Pontiac Bonneville SSEi
1992-1999 3.8L Supercharged V6
Pontiac Bonneville SSEi
1992-1999 3.8L V6 Supercharged
Pontiac Firebird
1993-1997 3.4L V6
Common Questions
What does code P0157 mean on a 1995-2005 Pontiac Sunfire?
P0157 stands for "O2 Sensor Circuit Low Voltage Bank 2 Sensor 2". Low voltage from the downstream O2 sensor on Bank 2.
What are the symptoms of P0157 on a Pontiac Sunfire?
Common symptoms of P0157 include: Check Engine Light.
What causes P0157 on a 1995-2005 Pontiac Sunfire?
Common causes of P0157 include: Faulty sensor, Short to ground, Exhaust leak.