Oxygen Sensor Replacement - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 4 (permalink) Old 05-09-2017, 03:50 PM Thread Starter
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Oxygen Sensor Replacement

I got a OBD2 code of 0135: oxygen sensor/heater bank 1/sensor 1

I assume that this is for the upstream sensor

does anyone know the OEM or GM part number for this sensor?

This sensor sits just behind (or in)the exhaust manifold and is accessible from the top of the engine. (correct?)

Looking at rockauto I see three AC Delco candidates:

1) center
2) professional
3) exhaust manifold

What's the difference?

I'm looking for the cheapest one that will get me through inspection.

Any thoughts on the Denso 234-4342?

I would appreciate any suggestions.

Helixal

2006 Cobalt LT Sedan 2.2L Automatic Laser Blue
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post #2 of 4 (permalink) Old 05-22-2017, 12:53 PM Thread Starter
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I installed the Denso Oxygen Sensor and it did the job.

The old one was a bitch to get out. I suggest a good quality tool. Finally found a Snap-On.

2006 Cobalt LT Sedan 2.2L Automatic Laser Blue
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post #3 of 4 (permalink) Old 05-22-2017, 02:10 PM
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Maybe nobody answered back because you failed to tell us the year and engine. These ecotec engine don't like anything but ACDelco. You might get lucky but don't be surprised if it fails within 3 months.

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post #4 of 4 (permalink) Old 05-22-2017, 06:04 PM
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^ I second this. In my case a week
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