Codes: P0700, P1192, P1406

Tiny
DFREEMAN
  • MEMBER
  • 1996 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 85,000 MILES
I need help in trouble shooting 3 codes: P0700, P1192 and P1406.

Thxs, Don
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Sunday, April 6th, 2008 AT 8:53 AM

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Tiny
WILLCARR
  • MEMBER
I am a working ASE certified mechanic (certified in everything but transmissions) and I have a Silverado in the shop right now with the same codes you have plus a P0161. Actually the P1406 (EGR code) went away after I exercised the EGR with a test tool and sprayed it out with PB, a penetrating spray lubricant.

The P0700 is a general trans control module failure that doesn't appear to affect the MIL.

I also have the P1192 code, which also doesn't affect the MIL, and for which I haven't been able to find a specific definition. One source listed it as Intake Air Duct Sensor High but other charts aren't listing this code at all so I'm still researching this code.

If I find anything specific I will list it here.

Will
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Wednesday, July 14th, 2010 AT 4:18 PM
Tiny
DOUG DICKENS
  • MEMBER
I have a 96 c3500 454 with code p1345 p0700 p1192 need help
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Saturday, December 17th, 2011 AT 11:20 PM
Tiny
KEN
  • ADMIN
Hello,

Each one of these codes is caused by the EGR valve sticking open and lowering the engine vacuum. The P1192 is a limp mode indicator.

If you remove the egr valve and test it you will see it is leaking. Sometimes you can clean it using carb spray.

Here is a video of how to test the EGR valve, once done clear the codes and the problem should be fixed.

https://youtu.be/DqUCbbKdWf4

and

https://www.2carpros.com/articles/check-engine-light-clear-codes

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Saturday, April 22nd, 2017 AT 11:49 AM

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