2005 Chevrolet 2500 HD 6.6L, what system is the P0642 code referencing?

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2005 Chevrolet 2500 HD 6.6L, what system is the P0642 code referencing?

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Carguy1 · Answer 1 · 2017-04-01T15:25:45+0000

HI there

It's referencing the engine management system. Specifically the sensors that have a 5 volt reference on them. This issue is either caused by a broken wire from the computer, or the computer itself. The computer isn't seeing the 5 volt reference at the sensors.

2005 Chevrolet 2500 HD 6.6L, what system is the P0642 code referencing?

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