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Service bulletin KC-164

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 id10204008
Published by NHTSA2021-12-07
Manufacturer's numberKC-164
Manufacturer's date2021-11-04
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Mack Chassis - Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - US14+OBD15 And US14+OBD16 Emissions, Common Model Years 2016 And 2017

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

Engine

Trouble codes named

P0422

Vehicles listed
MACK ANTHEM (AN)2016 to 2017
MACK CHU2016 to 2017
MACK CXU2016 to 2017
MACK GRANITE (GR)2016
MACK GRANITE (GR)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GU)2016
MACK GRANITE (GU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK GU2016 to 2017
MACK LEU2016 to 2017
MACK LR2016, 2017
MACK LR62016
MACK MRU2016 to 2017
MACK PINNACLE (CHU)2016
MACK PINNACLE (CHU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (CXU)2016
MACK PINNACLE (CXU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK TD2016 to 2017
MACK TERRAPRO (LEU)2016
MACK TERRAPRO (LEU/MRU)2016
MACK TERRAPRO (LEU/MRU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (MRU)2016
MACK TERRAPRO (MRU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (TE)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK TITAN (TD)2016 to 2017

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

Recalls for the same vehicles and component
15V7020002015-10-26. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
M0302 0220262026-03-03. Emissions. Emissions - Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP7 engine may not meet California and Federal Regulations (CARB).
CBR 820-9 2026012026-02-03. Service bulletin. CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
CBR 2107-22 2026012026-02-02. Service bulletin. CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
CBR 2171-11 2025112025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide
CBR 2107-21 2025052025-06-02. Service bulletin. Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
CBR 170-8 2025052025-06-02. Service bulletin. Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure (Low Oil Pressure) (Possible Related Codes - SPN4811 , SPN 100 , PID 100)
M0350 2025042025-05-05. Emissions. ER - Mack Trucks has identified that the Selective Catalyst Reduction (SCR) system in certain vehicles equipped with the MY 2017 or 2018 MP8 VGT and Turbo Compound (TC) engines are not meeting California and EPA emissions standards, or Mack cannot confirm its compliance.
CBR-561 2025032025-04-02. Service bulletin. If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659􀁡Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years
CBR-997 2024112024-12-02. Service bulletin. Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring.
M0310 2024102024-11-04. Emissions. EMISISON RECALL - SCR Replacement.