# Kohler Diagnostic System — Kohler Engine Diagnostics > EFI engine diagnostic tool utilizing a wireless interface module. (iPhone/iPad app by Diagnostic Systems Associates Inc..) - Source: https://appshunter.io/ios/app/kohler-diagnostic-system/id1006798011 (this page in markdown: same URL + `.md`) - Developer: [Diagnostic Systems Associates Inc.](https://appshunter.io/developer/1382894170) - Category: Business - Price: Free - Rating: 3.00/5 from 11 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 64 MB - Languages: English - Released: 2018-05-12 - Data updated: 2026-08-15 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/kohler-diagnostic-system/id1006798011/reviews.md ## What is Kohler Diagnostic System? Use the Kohler Engine Diagnostic System app with your Kohler Wireless Interface Module to diagnose EFI engine issues. The required Kohler Wireless Interface Module can be purchased through Diagnostic Systems Associates or from your Kohler distributor. ## Key features - EFI engine diagnostics - Wireless interface module connectivity - Troubleshoot engine issues - Requires specific hardware ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/kohler-diagnostic-system/id1006798011/reviews.md ### 1/5 — Horrible *2025-04-22* Won't stay connected.. connects then disconnects. This has been an issue with this app going on 2 years. A shame ### 1/5 — Works on Android *2024-10-26* All the features of this app work on my friends Android but not on my iPhone, it has hard or impossible to use most if not all features. All I can do is look at the trouble codes. ### 1/5 — Almost useless *2024-08-15* Bluetooth won't stay connected or just never connects. Not sure why this hasn't been fixed. ### 1/5 — Limited use application when it works *2024-08-02* App doesn’t consistently see connected Bluetooth devise. Limited options for diagnostic. Can’t activate or remotely control engine components for testing ### 1/5 — Bluetooth tool will not stay connected *2023-02-27* Everytime you open this app it disconnects the Bluetooth from mobile device to diagnostic tool. $500 for the tool and not useful at all. ### 5/5 — Great for troubleshooting EFI *2018-12-28* I have been using this for a bit on my iPhone and it works great for troubleshooting and repairing efi’s engines. The dashboard for sensors gives everything I need in one simple display. No more bulky laptops bungee corded to the tractor. ## Frequently asked questions about Kohler Diagnostic System ### What is the Kohler Diagnostic System app used for? The Kohler Diagnostic System app is used to diagnose EFI engine issues when connected to a Kohler Wireless Interface Module. It helps users troubleshoot problems with their Kohler engines. ### Do I need to buy anything else to use the Kohler Diagnostic System app? Yes, the app requires the purchase of a Kohler Wireless Interface Module to function. This module can be bought through Diagnostic Systems Associates or a Kohler distributor. ### What devices does the Kohler Diagnostic System app support? The Kohler Diagnostic System app is supported on iPhone, iPad, and iPod devices. It is designed for mobile use in diagnostic scenarios. ### How often is the Kohler Diagnostic System app updated? The Kohler Diagnostic System app was last updated on January 23, 2025. Updates typically address performance improvements and bug fixes for the diagnostic functionality. ### What is the age rating for the Kohler Diagnostic System app? The Kohler Diagnostic System app has an age rating of 4+. This indicates it is suitable for a wide range of users, though its practical use is for those with specific engine diagnostic needs. ### What is the user rating for the Kohler Diagnostic System app? The Kohler Diagnostic System app has a rating of 3.0 stars based on 11 ratings. This suggests a mixed reception from its user base. ### Does the Kohler Diagnostic System app have ads? No, the Kohler Diagnostic System app does not contain advertisements. It is a free application focused solely on its diagnostic purpose. ### When was the Kohler Diagnostic System app first released? The Kohler Diagnostic System app was first released on May 12, 2018. It has since received updates to maintain its functionality and compatibility. ## Version history (last 5 releases) ### 4.9 — 2026-08-08 Manuals for ECV830, ECV834, ECV936, ECV938 ### 4.8 — 2026-05-20 Updates and bug fixes. ### 4.6 — 2025-01-23 ECH440 Club Car manual update. ### 4.5 — 2024-01-15 Service manual updates. ### 4.4 — 2023-10-31 Set RPM test for ECH749-3140. ## Apps similar to Kohler Diagnostic System | App | Rating | Price | Category | | --- | --- | --- | --- | | [Target CRM](https://appshunter.io/ios/app/target-crm/id1536204342) | 2.0 (6) | Free | Business | | [Club Car Sales App](https://appshunter.io/ios/app/club-car-sales-app/id1464160887) | — | Free | Business | | [KOHLER Energy Management PRO](https://appshunter.io/ios/app/kohler-energy-management-pro/id1640298611) | 4.9 (37) | Free | Business | | [Rehlko Power Assistant](https://appshunter.io/ios/app/rehlko-power-assistant/id6476889674) | 3.0 (2) | Free | Business | | [Rehlko Service Files](https://appshunter.io/ios/app/rehlko-service-files/id1432626375) | 5.0 (3) | Free | Business | | [CLUB CAR PACK CHARGING SYSTEM](https://appshunter.io/ios/app/club-car-pack-charging-system/id1507803074) | 3.0 (2) | Free | Business | ## More apps by Diagnostic Systems Associates Inc. - [Kawasaki Diagnostic Tool](https://appshunter.io/ios/app/kawasaki-diagnostic-tool/id1454381279) All apps by Diagnostic Systems Associates Inc.: https://appshunter.io/developer/1382894170 ## Related topics [diagnostics system](https://appshunter.io/ios/topics/diagnostics-system) · [kohler diagnostic system](https://appshunter.io/ios/topics/kohler-diagnostic-system) · [small engine repair](https://appshunter.io/ios/topics/small-engine-repair) · [diagnostics engine](https://appshunter.io/ios/topics/diagnostics-engine) · [kohler](https://appshunter.io/ios/topics/kohler) · [kohler oncue plus](https://appshunter.io/ios/topics/kohler-oncue-plus) · [kohler pure warmth](https://appshunter.io/ios/topics/kohler-pure-warmth) · [engine sound diagnostic](https://appshunter.io/ios/topics/engine-sound-diagnostic) · [kohler konnect](https://appshunter.io/ios/topics/kohler-konnect) · [kohler generator](https://appshunter.io/ios/topics/kohler-generator) · [pure warmth](https://appshunter.io/ios/topics/pure-warmth) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*