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2014 cascadia I have a code I can't figure out the code spn…

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2014 cascadia I have a...
2014 cascadia I have a code I can't figure out the code spn 5246 fmi 15 and spn 5246 fmi 16 and also the Def light is blinking the little circle one
Submitted: 11 months ago.Category: Medium and Heavy Trucks
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Answered in 1 hour by:
9/7/2021
Technician: Joe Green, Trainer and Tech replied 11 months ago
Joe Green
Joe Green, Trainer and Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 541
Experience: ASE Master Certification In Automotive and Medium/Heavy Trucks and L2 Certification. College Instructor of Automotive Technology.
Verified

Hi, My name is***** will be happy to try to help. We can follow up as needed on here. Professionals are not employees of the site but users of the site and help on here as time allows depending on their daily schedule. Sorry to hear you're having troubles with this vehicle. These two codes are known as regulatory faults. They're mainly a fault sent as a message to inform you that an emission related fault has been ignored and the truck is going to be derated. That is also why the DEF light is flashing. There either currently is an issue or has been an issue with the SCR/DEF system and these codes have been set as a result. You'll need to determine what the original fault was that caused these. If someone has cleared the codes, this may make it a little more difficult to determine. In any case, if the original issue that caused these has been repaired, these codes will need to be set inactive by performing a validation procedure. This procedure is a way for the truck to recognize that the issue has been corrected. For most of these faults a validation will be a regen and parked scr conversion efficiency test if it's an SCR fault.

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Customer reply replied 11 months ago
ok
Technician: Joe Green, Trainer and Tech replied 11 months ago

Thanks for the question.

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Joe Green
Joe Green, Trainer and Tech
Category: Medium and Heavy Trucks
Satisfied Customers: 541
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Experience: ASE Master Certification In Automotive and Medium/Heavy Trucks and L2 Certification. College Instructor of Automotive Technology.

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