I have a 2013 Isuzu NPR HD 5.2L I4 with engine codes P1490 & P20C9, fuel condition good, fluid levels correct
P20C9 Isuzu Code - Diesel Exhaust Fluid Control Module Requested MIL Illumination Read more: https://www.autocodes.com/p20c9_isuzu.html
36.2k questions
32.2k answers
1.3k comments
22.8k users