Cummins Guidanz™ is a new suite of genuine service products, features and capabilities available from Cummins. Visit to learn more about Guidanz.

The Guidanz mobile app helps you speed up the repair process and improve customer uptime. Among the features are the following:
• Equipment and device dataplate information
• Prioritized Cummins fault codes and descriptions
• Ability to share any information in the app via email
• Route Parameter Manager diagnosis, repair and update functionality
• Read industry standard J1939 fault codes for all connected devices
• English, Spanish, and French language support –

Cummins certified service providers who subscribe to the Immediate Assessment feature of Guidanz also have access to:
• Prioritized faults and the top three most likely root causes
• Estimated service times
• A history of recently retrieved information, faults, and analysis right on your phone
• The ability to turn assessments into Guidanz Job Orders to track the equipment throughout the service event

To use Guidanz you will need a Cummins INLINE™ datalink adapter. Simply plug either the INLINE 7 or the new INLINE mini wireless adapter into the J1939 connector on the vehicle or equipment, and then connect to your phone or tablet via Bluetooth®. For more information or to purchase adapters, visit

Some features will require a functioning Internet connection at the time of service.

Stay tuned for additional updates as Cummins works to provide you a simple, user-friendly, guided workflow. You will be able to seamlessly share critical information about servicing Cummins engines and related equipment across multiple platforms, and with your whole service team.

What’s New

Version 4.7.0

• Now supports password removal on ECM through the use of Intapp units. This feature will not be available in China with release 4.7 and will be rolled out on a later release

• Enhancements to Fast Track Repair
• Calibration campaign installation capability is included in the base functionality and is available to all registered Guidanz App users.
• Added support to the following diagnostic tests
• Aftertreatment Engine Out NOx Sensor Test
• Aftertreatment Inducement Witness Test.
• Aftertreatment System Out NOx Sensor Test
• Compressor Bypass Valve Test
• EGR Delta Pressure Auto Zero Test
• Exhaust Throttle Auto Zero Test
• Also supports the following advanced features
• Aftertreatment Diesel Oxidation Catalyst Efficiency
• Aftertreatment DPF Absence History
• Aftertreatment Maintenance Filter Installation

Ratings and Reviews

3.5 out of 5
28 Ratings

28 Ratings

Naulumatua ,

Update doesn’t respond

Keeps taking me back to the start page when I tap on the update action tab

App Privacy

The developer, Cummins Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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