CHECK ENG LIGHT ON ITS READING THROTTLE ...

2007 GMC Yukon

Tiny

bjt59

January, 1, 2013 AT 10:41 PM

Check eng light on its reading throttle position sensor where is it and can I put it on

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8 Answers

Tiny

ASEMaster6371

January, 1, 2013 AT 10:42 PM

What is the code

codes never identify bad parts, just failed systems

Roy

Tiny

Wrenchtech

January, 1, 2013 AT 10:47 PM

This is a "drive by wire" electronic throttle system that requires some very expensive diagnostic equipment to troubleshoot. It uses 2 TPS sensors and then are incorporated into the electronic throttle body which is not cheap so you don't want to misdiagnose this.

Tiny

bjt59

January, 1, 2013 AT 10:57 PM

Code po121 po443

Tiny

bjt59

January, 1, 2013 AT 11:52 PM

Code are po121 @po443 so take it to Auto mechanic

Tiny

Wrenchtech

January, 1, 2013 AT 11:57 PM

Unless you feel like rolling the dice on a $600 part, yes, that is what I would advise.
The P0443 has nothing to do with that issue. That another problem in the fuel vapor system.

Tiny

Wrenchtech

January, 1, 2013 AT 11:59 PM

I just looked and the throttle body is more like $300 but still an expensive gamble.

Tiny

bjt59

January, 2, 2013 AT 12:14 AM

The another problem can I fix it

Tiny

Wrenchtech

January, 2, 2013 AT 12:17 AM

That indicates a problem in the purge control circuit that also need to be diagnosed electronically.

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