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How do I know which wire is the signal wire on the O2 sensor for a 2006 Aveo?

Tiny
CASABENSON
  • MEMBER
  • 2006 CHEVROLET AVEO
  • 280,000 MILES
My mechanic said he believes the ecm is shorting out my O2 sensors (3 in two months) I replaced the ecm with a used one but before I put the new sensor in I want to make sure the voltage isn't to high causing it to short yet another one.
Thanks a bunch
Devin
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Sunday, September 9th, 2012 AT 8:19 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
ECM don't short out sensors but sensors can cause the ECM to fail. If the quality of the sensor is suspect, they would not last.

There are 2 HO2S, whcih is faulty?

What were the trouble codes you were getting?
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Sunday, September 9th, 2012 AT 8:31 PM
Tiny
CASABENSON
  • MEMBER
  • 2 POSTS
It is the one above the catalytic converter. The trouble code was O2 sensor bank one. I just have a simple scanner and that's all ti says.
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Sunday, September 9th, 2012 AT 8:42 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
I need the EXACT code. O2 sensor has 2 circuits in them and if it is the heater side that has faile, the power supply is from battery and not linked to the computer.
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Sunday, September 9th, 2012 AT 9:38 PM

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