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Hugh Jory

Hugh Jory 8/26/2010

2003 Saturn Ion-3 Base 4 Cyl 2.2L

Preventive Maintenance

Chech engine light came on. It said Code PO133. Replace 02 senor.

Is this difficult and what appro cost of senor

1 Answer


HouseCallAuto 8/26/2010

The sensor is threaded into the exhaust manifold. Remove the heat shield covering the manifold, a few bolts hold it on and then replace the sensor under it. You will need an O2 sensor socket / tool. You will need this sensor >> http://www.autopartswarehouse.com/.../BS13455.html Drive-train

and this tool >> http://www.autopartswarehouse.com/.../L1712100.html

Not hard to change usually.


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