I have a 2010 cobalt with 2.2 and 5 speed. It has 129,000 miles on it. I replaced the O2 sensor because it said high resistance. I replaced it with a denso O2 sensor, then a bosch with the same result

Asked by Dec 20, 2014 at 08:19 PM about the 2010 Chevrolet Cobalt XFE

Question type: Maintenance & Repair

I have replaced it with two brands and the same issue both times but the bosch took about two days before it came on.

4 Answers

I forgot the code is P0030 for the car.

4,795

It might not be the O2 sensor http://helpforcars.net/obd_codes/p0030.html

58,225

Have you reset the ECM to clear the code?And if you have,and code is still there,check the wiring going to the 02,s the may be bad.

1 out of 1 people think this is helpful.
7,240

I get Bad O2 before the cat (You have 2 sensors ,,, 1 before and 1 at the discharge side of the cat. Read this explanation in everyday terns ~~~Testing O2 sensors that are installed ~~~ http://mr2.com/TEXT/O2_Sensor.html .. Good Luck

1 out of 1 people think this is helpful.

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