3719 0
UnclassifiedGeneral
What This Code Means
Insufficient filter regeneration; Filter flow resistance increased above critical values
Possible Causes
- •Prolongated city driving cycle (low exhaust temperatures)
- •DOC is damaged (no feed gas produced)
Related Winco Fault Codes
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for 3719 0 on your specific Winco unit — cited to the OEM manual, not a forum guess.
TRY IT FREE