Dealing with an after treatment issue. We narrowed it down to an electrical/ wiring issue. First thing to check was the fuse box but the map is missing. I found 1 fuse that has no power. I replaced the fuse but still no power so there is no power going to that location but I don't know what that fuse is for.
I know all 389's are not the same but I thought I'd ask. This is the firewall fuse box. It's the 3rd from the left on the top row of fuses. 30amp. Can anyone tell me what that fuse is for?
2016 389 Firewall Fuse Panel Map
Discussion in 'Peterbilt Forum' started by Jennyspete, Mar 9, 2025.
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This is a 2020 peterbilt 389Jennyspete Thanks this.
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