NON-COMPLIANCE RECALL
Mack Trucks Inc.
Greensboro, NC USA
Date
05.2024

Number
EC0032

Release
01

Page
1(6)

M0303 SCR Monitoring Software MP8 VGT
AN, CHU, CXU, GR, MRU, PI, and TE
RECALL INFORMATION
(May 2024)
Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP8
VGT engines may not meet California and Federal Regulations (CARB). This Recall is for updated
software that will reduce the amount of time necessary for the system to operate in a cold engine warmup strategy and provide health monitoring of the Selective Catalyst Reduction (SCR).
To ensure Mack remains emission compliant on these vehicles, follow the repair instructions outlined in
this document to Program the Engine control Module and the Aftertreatment Control Module. Install a
completion label in the door.

VEHICLES AFFECTED
Certain Mack vehicles manufactured between September 6, 2016, and December 21, 2018.

VEHICLE QUANTITY
There are 14,664 vehicles affected by this recall (14,664 U.S.).

Mack Truck Inc.
NON-COMPLIANCE RECALL

Date 05.2024

Page 2 of 6

Repair Instructions
1.
2.
3.
4.

Park the vehicle on a level surface.
Apply the parking brake.
Place the gear lever in neutral.
Install wheel chocks.

5.
6.
7.
8.

Turn on the ignition switch.
Log into PTT and connect to the vehicle.
Once the vehicle has been identified, enter the work order number, then click Start.
From the main menu select the Program tab, then select Program Electronic Control Unit
1700-08-03-39, then click Start.

9. Select Engine Control Module (ECM) and Aftertreatment Control Module (ACM).

10. Check the Advisory Box, then click Program.

Mack Truck Inc.
NON-COMPLIANCE RECALL

Date 05.2024

Page 3 of 6

11. Certain conditions must be met to continue with the programming. Once all conditions are
met, then click Continue to Start Programming.

12. Once programming has completed, clear any diagnostic trouble codes (DTC) and Finish
Work.

13. Install and fill out the Campaign Completion Label if needed.
14. Remove the wheel chocks.

15. Release vehicle to customer.

Mack Truck Inc.
NON-COMPLIANCE RECALL

Date 05.2024

Label & Certificate Instructions
NOTE

Page 4 of 6

Mack Truck Inc.
NON-COMPLIANCE RECALL

Date 05.2024

Page 5 of 6

Important Note!
If needed, print out this Emission Recall Proof of Correction Certificate. Fill in the appropriate information
for your records and provide a copy to the customer.

Mack Truck Inc.
NON-COMPLIANCE RECALL

Date 05.2024

Page 6 of 6

REIMBURSEMENT

This repair is covered by an authorized Non-Compliance recall. Reimbursement is obtained through the
normal claim handling process.

UCHP
Reimbursement
Claim Type (used only when uploading from the Dealer Business
System)

40

Recall Status
Vehicle repaired per instructions

1-Modified per
instructions

Labor code
2841-22-02-01

ECM and ACM, Reprogramming

0.4

Causal Part
3092091
Authorization Number

M0303

Note: Dealers are to perform Non-Compliance Recall on all subject vehicles at no charge
to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser
or subsequent purchasers). Whenever vehicles are subject to a Non-Compliance Recall are
brought to your dealership for service, or taken into your dealership vehicle inventory, it is
strongly recommended that every effort be made to perform the recall correction before the
vehicle is sold or released to the owner.