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Mack MD Recall 22V606: Engine May Shut Down Unexpectedly, Raising Crash Risk

NHTSA campaign 22V606, reported August 9, 2022, 150 vehicles potentially affected.

What this recall means for you

The engine control module (ECM) can develop an internal short circuit. When this happens, the engine may shut down unexpectedly while the truck is being driven.

An unexpected engine shutdown can increase the risk of a crash. If you own an affected truck, do not ignore the issue. Check your vehicle's VIN for open recalls and contact an authorized dealer or Mack's customer service at 1-800-866-1177, referencing recall SC0438.

The remedy is free: Cummins will replace the engine control module at no cost to the owner.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 22V606Mack Trucks, Inc.
Component
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
Problem
Mack Trucks, Inc. (Mack) is recalling certain 2023 MD6/7 trucks. The engine control module (ECM) may experience an internal short-circuit, which can result in an unexpected engine shut down.
Risk
An unexpected engine shut down can increase the risk of a crash.
Remedy
Cummins will replace the ECM, free of charge. Owner notification letters were mailed on September 27, 2022. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0438.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Affected vehicles

Mack MD2023