Mechanics

HOW DO I KNOW WHICH WIRE IS THE SIGNAL WIRE ON THE O2 SENSOR FOR A ?

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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Casabenson
September 9, 2012.



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?

KHLow2008
Sep 9, 2012.
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.

Tiny
Casabenson
Sep 9, 2012.
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.

KHLow2008
Sep 9, 2012.