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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

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Old 07-02-2010, 08:49 AM
jholz jholz is offline
Join Date: Jun 2010
Posts: 1
Default DTC P003A Turbocharger Boost Control Position Not Learned

I recently had to take my truck (2006 LLY) to the dealer on two occasions. First they found defective turbo vane position sensor and installed a new one. Second found gummed up turbo boost selenoid, installed new selenoid. Now the light came on and it is the turbocharger boost control position not learned. The light has cycled off and the truck seems to be running o.k. Does this mean another trip to the shop?

Last edited by jholz; 07-02-2010 at 09:11 AM.
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Old 07-02-2010, 10:15 AM
More Power's Avatar
More Power More Power is offline
Join Date: Feb 2000
Location: Big Sky Country
Posts: 9,568

Whenever the vane position conponents are replaced, the dealer tech must perform a position "re-learn" procedure using a Tech II scan tool. The tech can also exercise the components to verify that they are all doing what they need to do - as a test.

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