Service bulletin KC-2107
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10215316 |
| Published by NHTSA | 2022-07-05 |
| Manufacturer's number | KC-2107 |
| Manufacturer's date | 2022-06-03 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer.
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
| MACK ANTHEM (AN) | 2017 |
|---|---|
| MACK ANTHEM (AN) | 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| MACK ASET | |
| MACK CH | |
| MACK CHK SERIES | |
| MACK CHU | |
| MACK CHU | 2017 to 2018 |
| MACK CL | |
| MACK CLASS 6 | |
| MACK CLASS 7 | |
| MACK CLASS 8 | |
| MACK CRD SERIES | |
| MACK CRD112/113 | |
| MACK CRD200 | |
| MACK CRD92/93 | |
| MACK CS 300 | |
| MACK CS 300P | |
| MACK CS SERIES | |
| MACK CV | |
| MACK CX | |
| MACK CXU | |
| MACK CXU | 2017 to 2018 |
| MACK DM | |
| MACK DM SERIES | |
| MACK DM400 | |
| MACK DM600 | |
| MACK DM807 | |
| MACK DM809 | |
| MACK DM811 | |
| MACK DMM SERIES | (the catalog's model; the bulletin names a series or trim of it) |
| MACK E6 | |
| MACK E7 | |
| MACK F SERIES | |
| MACK FDM | |
| MACK FREEDOM | |
| MACK GRANITE (GR) | 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| MACK GRANITE (GU) | 2017 (the catalog's model; the bulletin names a series or trim of it) |
| MACK GU | |
| MACK GU | 2017 to 2018 |
| MACK J-TECH | |
| MACK LE | |
| MACK LEU | 2017 |
| MACK LR | |
| MACK LR | 2017, 2018, 2019, 2020, 2021, 2022 |
| MACK LR ELECTRIC | 2020 to 2023 |
| MACK M35AK | |
| MACK M65BX | |
| MACK MACK | |
| MACK MB SERIES | |
| MACK MC400 | |
| MACK MC600 | |
| MACK MD | 2020, 2021, 2022, 2023 |
| MACK MH | |
| MACK MIDLINER | |
| MACK MIDR | |
| MACK MILITARY VEHICLE | |
| MACK MR | |
| MACK MR SERIES | |
| MACK MR400 | |
| MACK MR600 | |
| MACK MRU | 2017 to 2018 |
| MACK MS SERIES | |
| MACK MS200P | |
| MACK MS300 | |
| MACK MS300P | |
| MACK PINNACLE (CHU) | 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| MACK PINNACLE (CXU) | 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| MACK PINNACLE (PI/PN) | 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| MACK R | |
| MACK RB | |
| MACK RD | |
| MACK RD SERIES | |
| MACK RM SERIES | |
| MACK RW SERIES | (the catalog's model; the bulletin names a series or trim of it) |
| MACK SR70 | |
| MACK T200 | |
| MACK T2060A | |
| MACK T2090L | |
| MACK T2090LR | |
| MACK T300 | |
| MACK TD | |
| MACK TD | 2017 to 2019 |
| MACK TE | 2019 to 2021 |
| MACK TERRAPRO (LEU/MRU) | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (MRU) | 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (TE) | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (TE) | 2022 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TITAN (TD) | 2017 to 2018 |
| MACK U | |
| MACK V-MAC | |
| MACK V-MAC III | |
| MACK WL | |
| MACK WS |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V139000 | 2026-03-11. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
|---|---|
| 22V606000 | 2022-08-09. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| TSB M-913-001 202609 | 2026-10-02. Service bulletin. Parker engine-mounted hydraulic pump service bulletin. |
|---|---|
| M0304 EC0033 202606 | 2026-06-29. Emissions. Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP8 Turbo Compound (TC) engine 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 warm-up strategy and provide health monitoring of the Selective Catalyst Reduction (SCR). |
| M0039 032026 | 2026-04-02. Emissions. Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU. |
| M0302 022026 | 2026-03-03. 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 202601 | 2026-02-03. 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 2128-7 202601 | 2026-02-03. Service bulletin. CBR - Engine Control Module (EMS) Software Information - Improvement List (Change Log), US21+OBD2021 Emissions ONLY |
| CBR 2107-22 202601 | 2026-02-02. 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 199 202512 | 2026-01-05. Service bulletin. Vehicles affected by this issue will show coolant runoff on the front rights side of the engine. |
| CBR 2171-11 202511 | 2025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide |
| CBR 199-6 202511 | 2025-12-03. Service bulletin. CBR - 13 Liter Engines ONLY - Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In Between The Coolant Pump Housing And Oil Cooler Housing. |