Kohler Diagnostic System

View and clear trouble codes, and watch engine data on your Kohler EFI engine.

Diagnostic Systems Associates, Inc. · com.diagsys.kohler

Not rated yet 10K+ downloads v1.71 39.5 MB Android 6.0+ PEGI 3 · Everyone

Download APK 39.5 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.71 (93)
Updated: Sep 15, 2026 (24 days ago)
APK size: 39.5 MB
Requires: Android 6.0+ (API 23)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Business (app)
Listed since: Jun 13, 2021 (at least)
Permissions: 14 (4 sensitive)
Website: kohler.diagsys.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Kohler Diagnostic System is an app by Diagnostic Systems Associates, Inc. in the Business category, listed since at least June 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 1.65, the APK grew from 27.2 MB to 39.5 MB. Since version 1.58, the minimum Android version rose from 4.1 to 6.0. It asks for 14 permissions, 4 of them sensitive, including read shared storage, Bluetooth advertise and Bluetooth connect. It asks for the same permissions as version 1.70.

What's new in v1.71

Fix for Android 7.0 support.

Description

From the listing uploaded by “appupdater”.

Use the Kohler Engine Diagnostic System app with your Kohler Wireless Adapter to diagnose EFI engine issues. The required Kohler Wireless Adapter can be purchased through Diagnostic Systems Associates here: https://store.diagsys.com/catalog/2 or from your Kohler distributor.

Version history

6 versions are listed, going back to v1.58. New versions arrive here every few months. Since v1.69 it requires Android 6.0+.

v1.71 LATEST Sep 15, 2026 39.5 MB TRUSTED v1.70 Aug 28, 2026 39.5 MB TRUSTED v1.69 Aug 12, 2026 39.5 MB TRUSTED v1.67 May 16, 2026 27.2 MB TRUSTED v1.65 Jan 25, 2026 27.2 MB TRUSTED

All 6 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 15, 2026.
Certificate issued to “Digital System Associates” This is the certificate of the Google Play version.
Same certificate as the 5 other versions checked

Store checks and file details

Developer signature verified Sep 15, 2026
Validated against Google Play Sep 15, 2026
Signed byCN=Digital System Associates
Signing certificate (SHA-1)48:34:94:81:AB:E3:23:FB:88:8D:8E:B9:46:A0:81:B9:9E:CB:77:84
File MD5597a540ffeddf81589643593e5e2309b
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (5 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (14)

Kohler Diagnostic System requests 14 permissions, 4 of them sensitive.

Bluetooth advertise Sensitive android.permission.BLUETOOTH_ADVERTISE
Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
Bluetooth scan Sensitive android.permission.BLUETOOTH_SCAN
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Bluetooth android.permission.BLUETOOTH
Bluetooth admin android.permission.BLUETOOTH_ADMIN
Change network state android.permission.CHANGE_NETWORK_STATE
Foreground service connected device android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.diagsys.kohler.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Bluetooth android.hardware.bluetooth
Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape

Kohler Diagnostic System APK: questions and answers

Is there a version of Kohler Diagnostic System for older Android phones?

The current version needs Android 6.0 or later. Version 1.67 is the newest listed build that installs on Android 5.0 and later. Get version 1.67 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Kohler Diagnostic System APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 5 other versions checked. After downloading, check that the file's MD5 is 597a540ffeddf81589643593e5e2309b.