2002 Chevy Cavalier o2 sensor

2002 CHEVROLET CAVALIER
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B.PEDRO.A
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Electrical problem
2002 Chevy Cavalier 4 cyl Two Wheel Drive Automatic
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I just installed a new o2 sensor "for the 2nd time" the one nearer the motor, now I am getting all type of odbII codes. "and the track off light now comes on where before only the engine light was on"

o2 circuit no activity (bank 1 sensor 1)

o2 circuit malfunction (bank 1 sensor 1)

o2 heater circuit malfunction (bank 1 sensor 1).

my question is how can I fix this?

thank you.
May 21, 2008 at 11:32 PM
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MHPAUTOS
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Hi there,
I would be trying a new O2 sensor as i feel that the one fitted is faulty or the loom plug is defective.

Mark (mhpautos)
May 22, 2008 at 4:52 AM