DIESEL REPAIR BLOG

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PACCAR PX7 (2021-2023) Fault Code List

by Kyle Cooper | August 7, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The PACCAR PX7 engine saw further refinements in performance and emissions compliance from 2021 to 2023. Whether you're working on routine maintenance or in-depth diagnostics, this fault code list will help you troubleshoot more efficiently. PACCAR PX7 (2021–2023)...

PACCAR PX7 (2017-2020) Fault Code List

by Kyle Cooper | August 6, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The PACCAR PX7 engine from 2017 to 2020 continued to power medium-duty trucks with dependable performance and advanced emissions technology. This fault code list helps you quickly identify and address issues to minimize downtime. PACCAR PX7 (2017–2020) Engine Overview...

PACCAR PX7 (2013-2016) Fault Code List

by Kyle Cooper | August 5, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The PACCAR PX7 engine continued to evolve between 2013 and 2016, offering improved emissions systems and durability in medium-duty applications. Whether you're working on a Kenworth or Peterbilt truck, this guide gives you fast access to the most important fault code...

PACCAR PX7 (2011-2012) Fault Code List

by Kyle Cooper | August 4, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The PACCAR PX7 engine powered a wide range of medium-duty trucks in 2011 and 2012, offering efficient fuel usage and solid performance in both regional and vocational settings. If you're servicing a Kenworth or Peterbilt with a PX7 engine, this list helps you quickly...

Mack MP7 (2017-2020) Fault Code List

by Kyle Cooper | August 2, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Mack MP7 engine remained a popular choice in regional haul and vocational fleets through 2020, offering reliable performance and strong emissions compliance. If you're working on a Mack Granite, Pinnacle, or similar truck, having fast access to fault codes can...

Mack MP7 (2014-2016) Fault Code List

by Kyle Cooper | August 1, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Mack MP7 engine continued to power medium-duty and vocational trucks through 2016 with enhanced emissions technology and increased reliability. Whether you’re working on a Granite, Pinnacle, or another Mack platform, having quick access to fault codes can help...

Mack MP7 (2010-2013) Fault Code List

by Kyle Cooper | July 31, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Mack MP7 engine continued to power medium-duty and vocational trucks through 2013 with enhanced emissions technology and increased reliability. Whether you’re working on a Granite, Pinnacle, or another Mack platform, having quick access to fault codes can help...

Mack MP7 (2007-2009) Fault Code List

by Kyle Cooper | July 30, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Mack MP7 engine was introduced as a powerful and fuel-efficient option for medium-duty applications. From 2007 to 2009, these engines became a go-to choice for vocational trucks, dump trucks, and regional haulers. Having access to the correct fault codes helps...

CUMMINS ISM (2007-2011) Fault Code List

by Kyle Cooper | July 29, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Cummins ISM engine from 2007 to 2011 was a go-to powerplant for fleets across North America. Known for its strong mid-range performance and reliability, it powered everything from vocational trucks to regional haulers. When issues come up, having quick access to...

CUMMINS ISM (2004-2006) Fault Code List

by Kyle Cooper | July 28, 2025 | Diagnostic Guides and Troubleshooting, Diesel Repair, Maintenance Tips and Procedures | 0 Comments

The Cummins ISM engine from 2004 to 2006 saw updates in emissions technology while still delivering the same dependable performance techs came to expect. Having accurate fault code information on hand makes diagnosis faster and helps avoid wasted hours chasing the...

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DIESEL REPAIR BLOG

PACCAR PX7 (2021-2023) Fault Code List

PACCAR PX7 (2017-2020) Fault Code List

PACCAR PX7 (2013-2016) Fault Code List

PACCAR PX7 (2011-2012) Fault Code List

Mack MP7 (2017-2020) Fault Code List

Mack MP7 (2014-2016) Fault Code List

Mack MP7 (2010-2013) Fault Code List

Mack MP7 (2007-2009) Fault Code List

CUMMINS ISM (2007-2011) Fault Code List

CUMMINS ISM (2004-2006) Fault Code List

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