Best Diesel Engine Troubleshooter Apps

247+ iOS apps curated and reviewed

4.7 avg rating

20 free apps

Updated September 2026

Finding the right diesel engine troubleshooter apps can be overwhelming with so many options. We've analyzed 247+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Diesel Engine Troubleshooter Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Diesel Engine Troubleshooter	Free	—	No	Yes	Aug 2026
2	ASE T2 Diesel Engine Prep	Free	—	No	Yes	Jun 2026
3	RPM Diesel Services	Free	5.0★ (1)	No	No	Jul 2026
4	Diesel Repair Mobile	Free	5.0★ (3)	No	Yes	Sep 2026
5	DDTS Fault Code	Free	—	No	No	May 2026
6	Ag Diesel Solutions	Free	5.0★ (1)	No	No	May 2026
7	Diesel Decoder	Free	3.3★ (30)	No	Yes	Sep 2026
8	Ultimate Diesel Builders Guide	Free	4.9★ (8)	No	Yes	Aug 2026

Top Picks for Diesel Engine Troubleshooter

#1

Diesel Engine Troubleshooter by EVREN YUCEBAS

What the symptom means

Editor's Choice

0.0(0 ratings)

FreeIn-App Purchases

Diesel Engine Troubleshooter screenshot 1

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Diesel Engine Troubleshooter screenshot 3

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Diesel Engine Troubleshooter screenshot 6

#2

ASE T2 Diesel Engine Prep by fly sky pty ltd

Heavy Truck Practice Q&A

Strong Contender

0.0(0 ratings)

FreeIn-App Purchases

ASE T2 Diesel Engine Prep screenshot 1

ASE T2 Diesel Engine Prep screenshot 2

ASE T2 Diesel Engine Prep screenshot 3

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ASE T2 Diesel Engine Prep screenshot 6

#3

RPM Diesel Services by Brandon Gregory Green

Mobile Diesel Mechanic Service

Worth Considering

5.0(1 ratings)

Free

RPM Diesel Services screenshot 1

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This app connects West Texas customers with mobile diesel engine services. Schedule appointments, receive maintenance reminders, access digital service records, and easily look up or order parts.

More Diesel Engine Troubleshooter apps to explore

Diesel Repair Mobile

Diesel Repair Mobile

Diesel Repair Mobile

The Ultimate Truck Repair App

This app provides heavy-duty truck technicians with instant access to a vast database of repair information, fault code lookups, and diagnostic procedures. It offers VIN decoding, wiring diagrams, and parts cross-referencing to streamline repairs. The platform is accessible on mobile devices and computers, syncing data across all your tools.

VIN DecoderFault Code LookupWiring Diagrams

DDTS Fault Code

DDTS Fault Code

DDTS Fault Code

Troubleshoot DDTS Products

Ag Diesel Solutions

Ag Diesel Solutions

Ag Diesel Solutions

Ag Diesel Solutions

Easily identify the correct diesel engine module for your tractor, truck, or construction equipment. Avoid manual catalog searches by simply selecting your application within the app.

Identify tractor modulesIdentify truck modulesIdentify construction equipment modules

by Diesel Laptops LLC

This tool connects via Bluetooth to heavy commercial vehicles to read and clear diagnostic trouble codes. It displays live data, allows bi-directional commands, and generates shareable reports through a cloud platform. Requires dedicated hardware for operation.

Read/clear Diagnostic Trouble Codes (DTCs)View live data parametersRun bi-directional commands

free with in-app purchases

Ultimate Diesel Builders Guide

Ultimate Diesel Builders Guide

Ultimate Diesel Builders Guide

by Engaged Media Inc.

This digital magazine provides expert tips and tricks for building powerful, fuel-efficient diesel trucks. Discover the latest parts and technology to enhance your vehicle's performance and towing capabilities.

Diesel truck building tips and tricksPerformance and fuel economy adviceTowing performance enhancement

free with in-app purchases

Diesel Fuel Injection Systems

DDTP Store Online

This app offers a wide selection of diesel components and truck parts, from oil filters to complete engines. Expert technicians are available to assist with all trucking needs, providing knowledge on OEM and aftermarket options, as well as the company's own brand.

Diesel components and truck partsOil filters to 3/4 enginesOEM and aftermarket parts

🛍️ Shopping

My Diesel Savings Fuel Locator

My Diesel Savings Fuel Locator

My Diesel Savings Fuel Locator

by Mogatrev LLC

Internal Combustion Engine ICE

Internal Combustion Engine ICE

Internal Combustion Engine ICE

Engine Reference Guide

Go further for less...

Find nearby or route-based fueling stations and compare prices from your preferred vendors. Track your fuel expenses efficiently in one convenient location.

Find fueling stations nearbyLocate stations on a routeCompare fuel prices

Truck Stop Diesel Prices

Find nationwide truck stop diesel prices to save money on fuel. Access over 5000 truck stop locations with up-to-date pricing information. A trusted resource for professional drivers since 2010.

Nationwide diesel price searchOver 5000 truck stop locationsSave money on fuel

🗺️ Navigation

Diesel Power Truck Repair

Diesel Power Truck Repair

Diesel Power Truck Repair

by SERGEY A DANILCHUK

by Engaged Media Inc.

Explore the world of diesel engines, from cars to trucks and motorsports. Get the latest news, in-depth reviews, and tech articles from seasoned automotive journalists. Fuel your passion for all things diesel with this comprehensive digital magazine.

Complete diesel-powered market coverageDiesel engine and trucking newsLatest diesel-powered car reviews

free with in-app purchases

FuelApp: Diesel discounts

FuelApp: Diesel discounts

FuelApp: Diesel discounts

Save up to $1/gal at the pump

Find discounted diesel fuel at major truck stops nationwide. Securely pay at the pump using fuel codes without needing to go inside. Save money on every gallon with no hidden fees.

Major diesel discountsSave up to $1/gallonSecure at-the-pump payments

🗺️ Navigation

Find Diesel Fuel Stations

🗺️ Navigation

by Motorenfabrik Hatz GmbH & Co. KG

Diagnose Hatz diesel engines wirelessly using your smartphone or tablet. Read error codes, view operating values, reset maintenance indicators, and generate engine reports. Requires the HDS²lite adapter for connection.

Wireless error code readingDisplay current operating valuesReset maintenance indicators

VroomScan - Engine Diagnosis

VroomScan - Engine Diagnosis

VroomScan - Engine Diagnosis

Car, Bike & Vehicle AI Scanner

FAQ about Diesel Engine Troubleshooter

Are there free diesel engine troubleshooter apps for iPhone?

Yes — 20 of the top diesel engine troubleshooter apps we rank are free to download, including Diesel Engine Troubleshooter and ASE T2 Diesel Engine Prep.

Does Diesel Engine Troubleshooter have ads or in-app purchases?

Diesel Engine Troubleshooter has no ads and offers in-app purchases, according to its App Store listing as of September 2026.

How many diesel engine troubleshooter apps are on the App Store?

We track 247+ diesel engine troubleshooter apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.