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Service bulletin KC-44

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10203987
Published by NHTSA2021-12-07
Manufacturer's numberKC-44
Manufacturer's date2021-11-16
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN

NHTSA's summary

Automated Manual Transmission ( AMT ) - Power Take Off ( PTO ) Active Fault Codes P106E18 (PSID 20 FMI 5) Or P106F18 (PSID 21 FMI 5) PTO Engagement Valve Current Below Threshold

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Transmission and driveline

Trouble codes named

P106E, P106F

Vehicles listed
MACK MACK

Listing a model year does not mean every vehicle of it is concerned: the document says which.