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Re: 2018 Volvo VNL D13 Code P24F6
Posted to HD/Fleet Forum on 4/29/2021

Those AHI modules are extremely finicky. Any oil contamination at all in the air system will eat one in no time. These trucks must have a coalescing air dryer filter. The air psi to the ahi module is regulated to around 44psi. What I do when I am diagnosing on... Login to read more.