What could cause a 2022 Weiler P385B paver to stay out of high idle after a regen and keep showing active fault codes?

[Marcus Marcus]

I am trying to troubleshoot a 2022 Weiler P385B paver that won't return to high idle after a regen. One of our techs performed a regeneration, but now the machine is stuck with active fault codes that won't clear. The paver still runs, but high idle is disabled, and the warning codes remain active no matter what we try. Looking for advice from anyone familiar with Weiler P385B regen problems, fault code resets, throttle lockout issues, or aftertreatment system faults

 

[Peter Martins]

hey @Marcus Marcus, I've seen a few machines stay in a derate or throttle-limited mode after a regen when the underlying aftertreatment fault wasn't actually resolved. It might be worth checking whether the active codes are pointing to a sensor issue (NOx, temperature, or differential pressure) because the ECU may be preventing high idle until it sees a healthy system again.