Allison Trans. Filter Restriction Switch Code

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Joined: Wed Sep 10, 2014 1:26 pm
First Name: Tanner
Last Name: Bennett

Allison Trans. Filter Restriction Switch Code

Post by ALLTRANSSOBT » Mon Sep 15, 2014 3:03 pm

2013 International Terrastar with Allison Trans. Code FM32 & SP3359. "Transmission Oil Filter Restriction Switch Fault". Customer states while on a long haul the check trans signal popped up and could not go over 60 MPH. Test drove vehicle and it shifted fine, fluid is full and VERY clean. 61,000 miles on vehicle. ID tag is not legible(Painted Over) so I am not certain what model the trans is. Also noticed that the trans may have vented some fluid. I am cleaning all of that off and prepping for a long Interstate test drive. Anybody Dealt with this code with an Allison before????
Tanner Bennett All Transmission World Orlando FL

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Joined: Thu Oct 31, 2013 3:15 pm
First Name: Robert
Last Name: Moreau
Location: Laguna Beach, CA

Re: Allison Trans. Filter Restriction Switch Code

Post by tranibob » Mon Sep 15, 2014 4:13 pm

The most knowlegeable person I know on Allison is Ted Keating at

I would give him a call if I was you, he'll most likely be able to help. (800)-997-4858
Robert Moreau
Technical Support Representative
Sonnax Industries, Inc.
Laguna Beach, CA 92651

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