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Re: Paccar MX-13 Codes, No info
Posted to HD/Fleet Forum on 10/2/2020 1 Reply


None of the faults you have listed should set the 1496-1515-1518Derates active.

As for the MIL/CEL/SEL voltage faults inspect the Engine wiring harness at the LR top corner of the engine for rubs or shorts to ground.

Other wise-

P3996 is DEF low ... Login to read more.

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