Spn 609 Fmi 19 - Dcu not detected on j1939 troubleshooting: The doser control unit (dcu) controls the downstream injection (dsi) system during a. Recently this truck, a 2025 freightliner m2 106 with the cummins b6. 7 and eaton procession amt had this error code of spn609 fmi19. This is a new to me truck, i just picked. Morning team so i gotta 2025 cascadia with a dd16 have 3 codes and no throttle only idle spn 2623 fmi 8 : Key cycle and fault condition no longer exist. Purpose:check for active or. Using your diagnostic tool, reset the parameters on the mcm. [b] if fault code 233/12 is still active after resetting parameters, go to step 2. Check the mcm parameters to ensure. That code is acm not detected. You have a data link fault somewhere and the acm is not communicating with the other modules. Most common thing i have seen on these trucks is. The tcm has detected an internal processing error. Purpose:check for active or inactive fault codes. The fmi/spn is used in conjunction with the spn to provide specific information related to a diagnostic trouble code (dtc). The imf may indicate that a problem. Spn fmi description 1761 1 deftlt signal out of range high. 5743 19 scr thermocouple controller signal not detect on j1939 5743 4 scr thermocouple controller out of range. So we've got a 2025 freightliner cascadia with a dd13 in for a no start issue.
Dcu not detected on j1939 troubleshooting: The doser control unit (dcu) controls the downstream injection (dsi) system during a. Recently this truck, a 2025 freightliner m2 106 with the cummins b6. 7 and eaton procession amt had this error code of spn609 fmi19. This is a new to me truck, i just picked. Morning team so i gotta 2025 cascadia with a dd16 have 3 codes and no throttle only idle spn 2623 fmi 8 :