ECU Engine Sim app icon

ECU Engine Sim

This app simulates an OBD-|| bluetooth adapter connected to a car's ECU

CHINH LUONG QUOC · com.obdii_lqc.android.obdii.elm327.ecusimfree

Not rated yet 10K+ downloads v1.3.5 830.2 KB Android 6.0+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v1.3.5 (35)
Updated
Sep 15, 2026 (23 days ago)
APK size
830.2 KB
Requires
Android 6.0+ (API 23)
CPU support
Any (no native code)
Category
Tools (app)
Listed since
Apr 20, 2021 (at least)
Permissions
5 (1 sensitive)
Website
speedalertapp.appspot.com
Developer contact
[email protected]

About this APK

ECU Engine Sim is an app by CHINH LUONG QUOC in the Tools category, listed since at least April 2021. It has no native code, so it runs on any Android processor.

Since version 1.3.0, the APK shrank from 3.2 MB to 830.2 KB and the minimum Android version rose from 4.4 to 6.0. It asks for 5 permissions, 1 of them sensitive: Bluetooth connect. It asks for the same permissions as version 1.3.4.

What's new in v1.3.5

Version 1.3.5

Description

From the listing uploaded by “appupdater”.

Version 1.3.5 This app converts an Android device (phone or tablet) become a car (virtual) with an OBDII bluetooth adapter connected This is convenient and cost-effective solution for android OBDII software developing and testing Hardware: Use 2 android devices (they are bluetooth paired), the one runs this app (ECU) and the other runs an android OBDII app for testing Using this app you don't need a real car, stay indoor and do all testing before doing with a real car The ECU Engine Simulation can affirm is running stable and reliable This application has been tested with following android OBD-II apps: * Code Reader Pro * Torque Pro * DashCommand * ELMScanToyota The testing result is very good Note: some android OBD-II apps used the bluetooth threshold detection can not connect to the simulation device, because the threshold of a real ELM adapter is different from the threshold of BLE on android device The ECU Engine Simulation can also work well with command line on android terminal apps The ECU Engine Simulation works like a data server, so it waits (listen) for data request (AT or OBD-II commands) from external tester, then processing and responds to the request The ECU Engine Simulation emulates OBD-II standard: ISO 15765-4 CAN 11/500Kb The app can process most AT commands, but the following AT commands are usually used with the ISO 15765-4 CAN standard: * ATZ, ATWS, ATSP0, AT@1, ATI, ATH0, ATH1, ATE0, ATE1, ATDP, ATRV, ATDPn, ATSPn, ATTPn, ATCAF0, ATCAF1, ATSP6, ATAT0 OBD-II commands (service mode and PIDs) supported by this app 1. Live data PIDs: 01 00, 01 01, 01 04, 01 05, 01 0A, 01 0C, 01 0D, 01 0E, 01 10, 01 11, 01 03, 01 04, 01 05, 01 21, 01 33, 01 46, 01 5C, 01 5E, 01 6A, 01 67 2. Vehile information: 09 00 - request supported PIDs 09 02 - request VIN number 09 04 - request calibration number 3. DTC trouble codes 03 - request stored codes 07 - request pending codes 0A - request permanent codes 04 - request clearing trouble codes and relevant stored data 4. Freeze frame data - frame #0 02 00 00 - request supported PIDs 02 02 00 - request DTC that cause freeze frame data to store 02 XX 00 - where XX are PIDs to request other freeze frame data Usage: After starting the application, you need to tap the button "Start simulating the ECU" to start the ECU simulation process, the data screen appears On the data screen you can live change some data that are visible on the data screen for the testing purpose All other invisible data will be returned with fixed values On the starting screen there are 2 information about the simulation bluetooth OBD-II adapter * Adapter name: the name of built-in bluetooth device of the phone (tablet). this bluetooth device emulates the ELM327 bluetooth adapter * Adapter address : the max address of built-in bluetooth device If you do testing on command line terminal, there is an order to put AT commands as following : ATZ - reset OBD-II adapter ATSP6 - set protocol ISO 15765-4 CAN 11/500Kb (maybe use ATSP0 or ATTP6) ATH1 - if you want to view the header 7E8 in the response and ATH0 if not ATCAF1 - if you want the adapter to format data for you ATCAF0 - you have to format the request data yourself. in this case remember to add PCI byte (equal to number of data bytes in the request) at the first place in the request for example 02 01 0D : where 01 0D is request vehicle speed (2 data bytes) and PCI byte is 02 After init the OBD-II adapter with the above AT commands you can send what OBD-II request (or other AT commands) you want as usual The free version "ECU Engine Simulation" is locked and does not respond to any OBD-II request, it only responds to initial AT commands. Privacy policy: https://www.freeprivacypolicy.com/live/4d959ed7-c0fd-4da4-8da1-98d09d46161f

Version history

4 versions are listed, going back to v1.3.0. Since v1.3.5 it requires Android 6.0+.

All 4 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 “chinh luong” This is the certificate of the Google Play version.
  • Same certificate as the 3 other versions checked

Store checks and file details

  • Developer signature verified Sep 15, 2026
  • Validated against Google Play Sep 15, 2026
  • Signed byCN=chinh luong, L=Thai Binh, ST=Thai Binh, C=84
  • Signing certificate (SHA-1)DD:5C:C4:12:D7:B4:A2:A0:CF:78:1E:27:35:69:FF:9B:5D:69:11:C9
  • File MD5897941961886f5ee707b49033a48e4bf
  • 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 (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (5)

ECU Engine Sim requests 5 permissions, 1 of them sensitive.

Required hardware & features

ECU Engine Sim APK: questions and answers

Is there a version of ECU Engine Sim for older Android phones?

The current version needs Android 6.0 or later. Version 1.3.4 is the newest listed build that installs on Android 5.0 and later. Get version 1.3.4 · 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 ECU Engine Sim 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 3 other versions checked. After downloading, check that the file's MD5 is 897941961886f5ee707b49033a48e4bf.

Tags

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