P0159
O2 Sensor Circuit Slow Response Bank 2 Sensor 2
2004-2007 Buick Rainier 4.2L I6
Low SeverityPowertrainGeneric (SAE)
Description
Slow response from the downstream O2 sensor on Bank 2.
Symptoms
- Check Engine Light
- Failed emissions
Common Causes
- Aging sensor
- Contaminated sensor
Diagnostic Steps
- Monitor response
- Test sensor
Repair Notes
Replace sensor.
Related Codes
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P0159 on Other Vehicles
Common Questions
What does code P0159 mean on a 2004-2007 Buick Rainier?
P0159 stands for "O2 Sensor Circuit Slow Response Bank 2 Sensor 2". Slow response from the downstream O2 sensor on Bank 2.
What are the symptoms of P0159 on a Buick Rainier?
Common symptoms of P0159 include: Check Engine Light, Failed emissions.
What causes P0159 on a 2004-2007 Buick Rainier?
Common causes of P0159 include: Aging sensor, Contaminated sensor.