× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Paccar MX-13 Codes, No info
Posted to HD/Fleet Forum on 10/2/2020 1 Reply

John,

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.

1 Replies Received (View Replies)