AppYonder

Diesel Decoder

Diesel Laptops LLC

No ratings yetReferenceAges 4+

Get it free on the App StoreOpens Apple's App Store

Screenshots

About this app

Diesel Decoder is a Bluetooth diagnostics tool for all Heavy Commercial Vehicles, it can be used for reading/clearing Diagnostic Trouble Codes (DTCs), parameters, live data, and running bi-directional commands using the Diesel Decoder hardware (required). Diesel Decoder also allows the user to generate local and cloud based reports that may be viewed, printed, or shared with others via the Diesel Laptops Diesel Health Platform.

What's new

Version 5.4.0 · Nov 12, 2026

NEW • Expanded OBD-II parameter decoding for broader vehicle coverage. • Freeze frame data and large Cummins fault messages are now fully received and displayed. • Firmware updates now finish with a clear "Firmware Update Complete" message. • Shared app logs now include your last 3 sessions, helping our support team solve issues faster. FIXES • Manually entered VINs and vehicle info now carry over to PDF reports. • OBD-II faults now show the correct status (Active, Pending, or Permanent) when a vehicle reports more than one. • Fixed the Disable DEF Derate command on PACCAR MX engines. • Bi-directional tests: tapping Next after a test finishes no longer leaves your next command stuck. • Fixed bi-directional menus not auto-filtering for some vehicle makes and models. • J1587 engine modules now show the correct "Engine" label instead of "Source Address 128". IMPROVEMENTS • Improved adapter communication reliability. • Updated in-app purchase components and general performance and stability improvements.

In-app purchases

The most popular purchases on the App Store.

  • Decoder Professional MonthlySubscription · 2 months free trial$599.00 / month

More from Diesel Laptops LLC

You might also like

All apps like Diesel Decoder →