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  1. Driver10392
    Post

    SPN 521052 RM 31

    Had to change ECU now its normal it got shot some how :(
    Post by: Driver10392, Nov 10, 2023 in forum: Freightliner Forum
  2. Driver10392
    Post

    SPN 521052 RM 31

    Truck runs on 5 miles/hour has 3 different codes now 521049 521050 521052 All FMI 31!
    Post by: Driver10392, Nov 6, 2023 in forum: Freightliner Forum
  3. Driver10392
    Thread

    SPN 521052 RM 31

    Hello I have a Freightliner 2019 Cascadia I am receiving the Error code SPN 521052 RM 31 Description Diesel Exhaust Fluid (DEF) Inducement CEl...
    Thread by: Driver10392, Nov 6, 2023, 3 replies, in forum: Freightliner Forum
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