Allison Fault Code
SPN 191 FMI 9
Trans Warning.
Variant 1
System
Not specified
Symptom
Trans Warning.
Diagnosis, fix steps & Red Seal insights
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Unlock the fix — free accountVariant 2
System
Transmission
Symptom
Trans is in "Limp" (3rd Gear).
Diagnosis, fix steps & Red Seal insights
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