CHECK ENG LIGHT ON ITS READING THROTTLE ...

  • Tiny
  • bjt59
  • 2007 GMC Yukon
  • 69,000 miles

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

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Tuesday, January 1st, 2013 AT 10:41 PM

8 Replies

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

What is the code

codes never identify bad parts, just failed systems

Roy

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Tuesday, January 1st, 2013 AT 10:42 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,040 posts

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.

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Tuesday, January 1st, 2013 AT 10:47 PM
  • Tiny
  • bjt59
  • Member

Code po121 po443

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Tuesday, January 1st, 2013 AT 10:57 PM
  • Tiny
  • bjt59
  • Member

Code are po121 @po443 so take it to Auto mechanic

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Tuesday, January 1st, 2013 AT 11:52 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,040 posts

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.

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Tuesday, January 1st, 2013 AT 11:57 PM
  • Tiny
  • Wrenchtech
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  • 20,040 posts

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

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Tuesday, January 1st, 2013 AT 11:59 PM
  • Tiny
  • bjt59
  • Member

The another problem can I fix it

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Wednesday, January 2nd, 2013 AT 12:14 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,040 posts

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

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Wednesday, January 2nd, 2013 AT 12:17 AM

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