850 OBD-II



1.5.2 $1.99xiaotec

OBDII - ELM327 Terminal tool for 96-98 Volvos

What's 850 OBD-II APK?

850 OBD-II is a app for Android, It's developed by xiaotec author.
First released on google play in 5 years ago and latest version released in 6 months ago.
This app has 2.9K download times on Google play and rated as 4.56 stars with 142 rated times.
This product is an app in Auto & Vehicles category. More infomartion of 850 OBD-II on google play
This app is mainly for Volvos of years 1996-98 to use with ELM327 bluetooth/Wifi/USB dongle to diagnose, read and even program little bit. To exceed over standard OBDII capabilities (ex. Pxxx codes not being there in case of fault) to read these cars to help diagnose problems. Please check website for latest and more information.

ELM327(V1.4b or greater).
Most problems comes when ELM is not having correctly behaving firmware! Example missing command ATSI which is critical! If you have on ELM327 like device with just black glue chip on board (C.O.B.).. It works only with standard OBDII stuff and not with this app most functions. App has pop up to notify user if this detected.

850/900 series
On these models Electronic Control Units as Yazaki dash, M4.3, MFI system (LH-jetronic 3.2 & EZ129K), Fenix 5.2, ECC(A/C) and Cruise Control are not reachable by ELM327!
(VDO dash and M4.4 are OBD capable!)

These series has still lot of work to be correct.

C70/S70/V70/XC70, S90/V90 series

1999-2000 years were developing years as example V70 models are working partially like not to connect to Engine ECU or ABS due them being newer CAN Bus systems BUT! VGLA, Immobiliser, SRS, AW 50-42.. are connected due them being on older systems still.

Main features:
+Service Light (SRI) reset/programming
+Fault Code (DTC) Reading and clearing
+LiveData (realtime sensor data) log
+Reading info of the car (example part numbers of ECUs)
+Injector testing (Motronic M4.4)
+TDi Fuel pump Dynamic Timing (MSA15.7)
-SRS light? It will turn off if there is no left fault codes

Capable of:
-Read some basic standard OBDII stuff via Scan(P0* -codes, MIL light status, Supported PIDs - refer for LiveData).

Live Data (scrolling values):
+SRS (airbag)
+Instrument panel (COMBI)
+AW 50-42 / AW 30-43 (Automatic Gearbox)
+Motronic 4.4
+Immobilizer (41)

-Read and translate most Volvo specific DTC:s.
*Fault Codes supported fully from:
+MSA15.7 (only with D5252T engines!)
+AW 50-42 / AW 30-43
+912-D Heater
+ROP (Roll Over Protection) (only C70?)
+ECC (only S40/V40, C70/S70/V70/XC70)
..more still coming!

Component test (Activation):
+Motronic (M4.4)
-Engine Cooling Fans
-IAC Valve
-Fuel Pump Relay
-SAS Air Pump
-SAS Air Valve
-Dynamic Fuel Pump Timing (TDI)
-EGR Valve
-Turbo Regulating Valve
-Heater Relay 1
-Heater Relay 2/3
-Engine Cooling Fans
-MIL Light
-S1 ja S2 solenoids
-Lock-up Solenoid
-Line Pressure Solenoid
-Warning Light
-ABS pump

-You can use this App too as a terminal for ELM327 to send individual hand written commands at Service screen for what ever you want and supports multiple command sent at once. Please read ( i ) - button to check how in app .

-Included Saab 9-3 2.8T Aero/Turbo X speedlimiter read and changer (untested) for OBDLinkSX. Read Info of usage.


There will be some errors/bugs as i can test things mostly on my own Volvo and or bench. So when you send that 850log.txt file to me via email (via settings) i look what i can do!

Will be updated based on feedback.
Thanks for your support! I hope this will be useful and i will make it even more useful by time!

I don´t take any responsibility what this app can cause by using it or while using it.
I don´t warrant any things this app says. Many are just best guess by study and will be fixed as noted.
App doesn't have any tracking of users (location permission i asked due because of bluetooth permissions*) only what Google Play Store does itself(counting etc).

*To access the hardware identifiers of nearby external devices via Bluetooth -- scans, your app must now have the ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permissions

*To have Wifi support needed to have next permissions; CHANGE_WIFI_STATE and android.permission.INTERNET.

Made in Finland
- Sincerely Aleksi Venäläinen