Anyone have a definition for code 520423. Lost all air over electric on the truck and this is the active code. Anyone have the code definition or a current paccar cecu troubleshooting manual? Thanks!
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2022 Kenworth T680 code 520423
2
01-14-2023, 08:22 AM
Ok. Quick update for someone that might run into this. Was never able to find a definition on the code. The symptom was that the whole electric over air solenoid chassis node was not working. Brand new truck with 240 miles on it. A small tap with a screwdriver handle and it started working just fine. Found out that they have some issues with those controllers at times.
Thanks given by: quality truck , mastergregor , Jokay1982
3
06-13-2026, 08:15 AM
(01-14-2023, 08:22 AM)windowrattler Wrote: Ok. Quick update for someone that might run into this. Was never able to find a definition on the code. The symptom was that the whole electric over air solenoid chassis node was not working. Brand new truck with 240 miles on it. A small tap with a screwdriver handle and it started working just fine. Found out that they have some issues with those controllers at times.
Thank you for follow up, had the same issue today, replaced the whole back end for solenoids, things are good to go. Saved me a bunch of time! Thanx again!
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