# OBD2 **URL:** https://forum.realdash.net/c/connectivity/obd2/35.md [Latest](https://forum.realdash.net/latest.md) · [Categories](https://forum.realdash.net/categories.md) · [Tags](https://forum.realdash.net/tags.md) --- ## [About the OBD2 category](https://forum.realdash.net/t/about-the-obd2-category/40)
**Author:** [@system](https://forum.realdash.net/u/system)\ **Replies:** 0
--- ## [What Adapter shoud I use?](https://forum.realdash.net/t/what-adapter-shoud-i-use/1506)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [January 13, 2023, 9:53am UTC](https://forum.realdash.net/t/what-adapter-shoud-i-use/1506 "2023-01-13T09:53:52Z")
Do not use cheap brandless OBD2 adapters. They are poor clones of proper adapters, will not support all protocols even when advertised to do so, and probably will fail in couple of months. We have been using adapters fr… --- ## [How to calibrate the OBD2 battery voltage](https://forum.realdash.net/t/how-to-calibrate-the-obd2-battery-voltage/644)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [August 10, 2020, 7:04am UTC](https://forum.realdash.net/t/how-to-calibrate-the-obd2-battery-voltage/644 "2020-08-10T07:04:29Z")
On OBD2 connections, by default RealDash reads the battery voltage using ATRV command. That command returns the battery voltage as the OBD2 adapter see it instead of requesting the voltage from the ECU. Sometimes the ba… --- ## [Customize OBD2 communications](https://forum.realdash.net/t/customize-obd2-communications/79)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [August 13, 2019, 8:24am UTC](https://forum.realdash.net/t/customize-obd2-communications/79 "2019-08-13T08:24:44Z")
https://github.com/janimm/RealDash-extras --- ## [OBD2 indicators, fuel level and gear](https://forum.realdash.net/t/obd2-indicators-fuel-level-and-gear/68)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 8\ **Last updated:** [August 25, 2026, 3:16pm UTC](https://forum.realdash.net/t/obd2-indicators-fuel-level-and-gear/68 "2026-08-25T15:16:12Z")
GEAR In OBD2 connection, Gear is calculated per speed and your vehicle gear ratios: Go to RealDash ‘Settings-\>Units & Values’ and set Vehicle speed source as ‘ECU Speed Sensor’ Go to Garage, open vehicle door and tap … --- ## [Connection settings](https://forum.realdash.net/t/connection-settings/66)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [August 13, 2019, 7:40am UTC](https://forum.realdash.net/t/connection-settings/66 "2019-08-13T07:40:37Z")
You can try to improve the performance by enabling two optimizations for OBD connection. Go to ‘Garage-\>Connections’ and select your OBD2 connection settings The ‘Use Multipid Request’ will increase the data rate on n… --- ## [How to connect, USB serial](https://forum.realdash.net/t/how-to-connect-usb-serial/65)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [August 13, 2019, 7:37am UTC](https://forum.realdash.net/t/how-to-connect-usb-serial/65 "2019-08-13T07:37:42Z")
Here are the most common steps to connect to OBD2-USB-serial adapter. USB serial connections are available in Android and Windows versions of RealDash. Apple does not allow generic serial connections with iOS. Also note… --- ## [How to connect, WiFi](https://forum.realdash.net/t/how-to-connect-wifi/64)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 0\ **Last updated:** [August 13, 2019, 7:26am UTC](https://forum.realdash.net/t/how-to-connect-wifi/64 "2019-08-13T07:26:44Z")
Here are steps to connect to ELM327 WiFi adapter. Please note that you will need your adapter manual for some of the settings. If you have created connections that do not work, you may want to clear RealDash app data, o… --- ## [How to connect, Bluetooth](https://forum.realdash.net/t/how-to-connect-bluetooth/63)
**Author:** [@realdashdev](https://forum.realdash.net/u/realdashdev)\ **Replies:** 2\ **Last updated:** [May 18, 2026, 9:01am UTC](https://forum.realdash.net/t/how-to-connect-bluetooth/63 "2026-05-18T09:01:27Z")
Here are the most common steps to connect to Bluetooth ELM327 adapter. If you have created connections that do not work, you may want to clear RealDash app data, or uninstall/install. Turn Bluetooth on from your devic… --- ## [Mk6 ford transit help](https://forum.realdash.net/t/mk6-ford-transit-help/1463)
**Author:** [@SiOBD](https://forum.realdash.net/u/SiOBD)\ **Replies:** 8\ **Last updated:** [September 25, 2026, 7:18am UTC](https://forum.realdash.net/t/mk6-ford-transit-help/1463 "2026-09-25T07:18:09Z")
Dear all, first of all I have to say what an awesome app!! Really looking forward to creating a bespoke digital dash for my mk6 transit van but I’m having a problem connecting, I know transits have a ford protocol as I… --- ## [UDS service22 comunication](https://forum.realdash.net/t/uds-service22-comunication/10481)
**Author:** [@Lilgarage](https://forum.realdash.net/u/Lilgarage)\ **Replies:** 7\ **Last updated:** [June 17, 2026, 7:40am UTC](https://forum.realdash.net/t/uds-service22-comunication/10481 "2026-06-17T07:40:59Z")
I am using RealDash custom OBD2 XML with an OBDLink LX to communicate with an ECU over 29-bit UDS/ISO-TP (500k CAN). Request: TX ID: 18DA3AF1 RX ID: 18DAF13A Service: 22 52 06 The ECU returns a multi-frame ISO-TP res… --- ## [Custom/extra inputs within realdash](https://forum.realdash.net/t/custom-extra-inputs-within-realdash/7111)
**Author:** [@GR-RY](https://forum.realdash.net/u/GR-RY)\ **Replies:** 86\ **Last updated:** [June 7, 2026, 8:10am UTC](https://forum.realdash.net/t/custom-extra-inputs-within-realdash/7111 "2026-06-07T08:10:49Z")
Hi I have some information for my car to add some further connections that currently don’t work out of the box on RealDash such as tyre pressures and rear diff temp etc. how do I get this information into RealDash and g… --- ## [3 PIDs work in Torque app but not in RealDash - Toyota 86](https://forum.realdash.net/t/3-pids-work-in-torque-app-but-not-in-realdash-toyota-86/10245)
**Author:** [@Racetic](https://forum.realdash.net/u/Racetic)\ **Replies:** 3\ **Last updated:** [June 2, 2026, 11:24am UTC](https://forum.realdash.net/t/3-pids-work-in-torque-app-but-not-in-realdash-toyota-86/10245 "2026-06-02T11:24:43Z")
The PIDs: Oil Temp - 2101, header 7E0, equation AC-40 Brake Position - 2141, header 7B0, equation min(100, 1.1 x max(A-10, 0)) Fuel Level - 2129, header 7C0, equation (A x 50)/100 All 3 work perfectly in Torque app. … --- ## [Resources for Viewing DTC Freeze Frame and Clearing DTC](https://forum.realdash.net/t/resources-for-viewing-dtc-freeze-frame-and-clearing-dtc/9962)
**Author:** [@aaronjaunt](https://forum.realdash.net/u/aaronjaunt)\ **Replies:** 2\ **Last updated:** [March 3, 2026, 8:32am UTC](https://forum.realdash.net/t/resources-for-viewing-dtc-freeze-frame-and-clearing-dtc/9962 "2026-03-03T08:32:08Z")
On this page: Action and Triggers What’s the intended implentation of these Actions? If I set-up a button for READ and CLEAR, when I READ, where is the freeze frame written to and how do I access it? In this post: Di… --- ## [Supported ODB2 Devices](https://forum.realdash.net/t/supported-odb2-devices/148)
**Author:** [@sudormf7788](https://forum.realdash.net/u/sudormf7788)\ **Replies:** 31\ **Last updated:** [October 21, 2025, 10:40am UTC](https://forum.realdash.net/t/supported-odb2-devices/148 "2025-10-21T10:40:54Z")
Hi RealDash, I have tried several ODB2 bluetooth devices like ELM327, BlueDriver, Vgate… and they have different results like connection or latency issue. I have read the ELM support may vary but I am wondering if you … --- ## [Set odometer to correct milage](https://forum.realdash.net/t/set-odometer-to-correct-milage/1005)
**Author:** [@freshfitz](https://forum.realdash.net/u/freshfitz)\ **Replies:** 9\ **Last updated:** [May 28, 2025, 5:24am UTC](https://forum.realdash.net/t/set-odometer-to-correct-milage/1005 "2025-05-28T05:24:22Z")
I’m struggling setting the odometer. From what I understand my car stores the odometer reading in the instrument cluster and the ecu increments the cluster reading as the card is driven. I want to set the odometer to th… --- ## [lag whilst running realdash](https://forum.realdash.net/t/lag-whilst-running-realdash/131)
**Author:** [@michieldamen](https://forum.realdash.net/u/michieldamen)\ **Replies:** 5\ **Last updated:** [January 8, 2025, 6:38am UTC](https://forum.realdash.net/t/lag-whilst-running-realdash/131 "2025-01-08T06:38:42Z")
Hey realdash. First of all, what a application you guys have made !! the amount of customizing is amazing. Only problem is the 2 seccond lag during operation, im running realdash of a note 9 so prossesing power shouldnt… --- ## [OBD2 Connection Issues](https://forum.realdash.net/t/obd2-connection-issues/6972)
**Author:** [@infomanss](https://forum.realdash.net/u/infomanss)\ **Replies:** 2\ **Last updated:** [November 22, 2024, 7:05am UTC](https://forum.realdash.net/t/obd2-connection-issues/6972 "2024-11-22T07:05:36Z")
I’m a new user. Hardware is Raspberry Pi 3. I first tried an OBD2 to USB cable…the connection would last a few minutes, but then just stop working, i.e., just driving a short distance and the gauges would stop working…a… --- ## [Nissan Patrol Safari y61](https://forum.realdash.net/t/nissan-patrol-safari-y61/6527)
**Author:** [@hamad](https://forum.realdash.net/u/hamad)\ **Replies:** 1\ **Last updated:** [October 7, 2024, 10:45am UTC](https://forum.realdash.net/t/nissan-patrol-safari-y61/6527 "2024-10-07T10:45:10Z")
Everyone is looking for a solution to connect the Nissan Patrol Safari Y61-4800, model year 2010, but without success. What is the suitable solution? I have tried many methods, but none have worked. In your opinion, what… --- ## [OBDLink SX obtaining data](https://forum.realdash.net/t/obdlink-sx-obtaining-data/6501)
**Author:** [@elisterr](https://forum.realdash.net/u/elisterr)\ **Replies:** 1\ **Last updated:** [October 2, 2024, 2:37pm UTC](https://forum.realdash.net/t/obdlink-sx-obtaining-data/6501 "2024-10-02T14:37:46Z")
Hi, I’m using OBDLink SX with Audi A4 B6. When using RealDash I only have a limited ammount of data available for input on the dash. For example: The car’s ECU outputs brake oil pressure. In RealDash I only have “Bra… --- ## [OBD II Protocol missing?](https://forum.realdash.net/t/obd-ii-protocol-missing/6350)
**Author:** [@Joshua1988](https://forum.realdash.net/u/Joshua1988)\ **Replies:** 2\ **Last updated:** [September 20, 2024, 6:13am UTC](https://forum.realdash.net/t/obd-ii-protocol-missing/6350 "2024-09-20T06:13:23Z")
Hey guys. Can you please confirm that Realdash has no protocol #9 ISO 15765-4 CAN (29 bit ID, 250 kbaud)? --- ## [ELM327 ATMA results](https://forum.realdash.net/t/elm327-atma-results/6193)
**Author:** [@Joshua1988](https://forum.realdash.net/u/Joshua1988)\ **Replies:** 1\ **Last updated:** [September 2, 2024, 11:04am UTC](https://forum.realdash.net/t/elm327-atma-results/6193 "2024-09-02T11:04:16Z")
atma atma 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 0644551000000000000 064455100000000000… --- ## [Boost gauge, indication too low](https://forum.realdash.net/t/boost-gauge-indication-too-low/3324)
**Author:** [@RafaU89](https://forum.realdash.net/u/RafaU89)\ **Replies:** 5\ **Last updated:** [January 22, 2024, 7:39am UTC](https://forum.realdash.net/t/boost-gauge-indication-too-low/3324 "2024-01-22T07:39:28Z")
Hello, I have been using this great app for a long time. Recently I discovered that the boost indication is too low. Max shows 1.53 bar when the actual boost is max 1.67 bar. In which configuration can I change it? M… --- ## [Fuel consumption 0](https://forum.realdash.net/t/fuel-consumption-0/3811)
**Author:** [@JelleMax](https://forum.realdash.net/u/JelleMax)\ **Replies:** 15\ **Last updated:** [October 30, 2023, 2:22pm UTC](https://forum.realdash.net/t/fuel-consumption-0/3811 "2023-10-30T14:22:29Z")
Hi everyone I have a jeep renegade with an obd2 scanner in it. With torque I can see my fuel consumption but with realdash I’m unable to make it work. I get values for MAF but the fuel consumption is always 0 for both t… --- ## [Multi-bus data with OBDLink EX](https://forum.realdash.net/t/multi-bus-data-with-obdlink-ex/3872)
**Author:** [@b5dover](https://forum.realdash.net/u/b5dover)\ **Replies:** 1\ **Last updated:** [October 3, 2023, 5:36am UTC](https://forum.realdash.net/t/multi-bus-data-with-obdlink-ex/3872 "2023-10-03T05:36:55Z")
I have a 2010 Chevrolet Camaro RS that I am in the process of swapping to a V8 and using a Megasquirt MS3pro standalone ECU. Before I start the swap and disable my car I’ve been working on getting all the CAN/OBDII signa… --- ## [OBD XML Bit Shifting](https://forum.realdash.net/t/obd-xml-bit-shifting/3582)
**Author:** [@mmain](https://forum.realdash.net/u/mmain)\ **Replies:** 1\ **Last updated:** [August 20, 2023, 6:55am UTC](https://forum.realdash.net/t/obd-xml-bit-shifting/3582 "2023-08-20T06:55:22Z")
Hi, I originally added a name value for torque converter lockup which is a represented as a byte with value 0 = off and value 1 = on (I assumed only bit 0 is changing); this is working fine, but I tried to tidy the xml e… --- ## [Getting Fuel level gauge to display properly](https://forum.realdash.net/t/getting-fuel-level-gauge-to-display-properly/3121)
**Author:** [@OLD\_GUY](https://forum.realdash.net/u/OLD_GUY)\ **Replies:** 4\ **Last updated:** [August 8, 2023, 8:36am UTC](https://forum.realdash.net/t/getting-fuel-level-gauge-to-display-properly/3121 "2023-08-08T08:36:16Z")
Continuing the discussion from OBD2 indicators, fuel level and gear: I’m using an OBDLink SX with a android head unit. From what I’ve been able to gather, that SX unit supports ELM327 commands . My 2005 Silverado 2500H… --- ## [Gears Not Displaying Correctly](https://forum.realdash.net/t/gears-not-displaying-correctly/293)
**Author:** [@Intex](https://forum.realdash.net/u/Intex)\ **Replies:** 21\ **Last updated:** [April 14, 2023, 4:34pm UTC](https://forum.realdash.net/t/gears-not-displaying-correctly/293 "2023-04-14T16:34:30Z")
The car I drive is a Mustang 5.0 automatic. When the car is turned on and at rest, the gear shows as ‘N’ which is fine. When you start moving, the gear changes to ‘1’ as expected, however if I use the paddles to shift to… --- ## [Connectivity Problem iOS](https://forum.realdash.net/t/connectivity-problem-ios/1454)
**Author:** [@fastd](https://forum.realdash.net/u/fastd)\ **Replies:** 5\ **Last updated:** [December 20, 2022, 6:51am UTC](https://forum.realdash.net/t/connectivity-problem-ios/1454 "2022-12-20T06:51:43Z")
I’m having a problem: I downloaded the app; I purchased the “full version” on the apple store. I am using a VEEPEAK OBDCheck BLE bluetooth scanner. I can ADD the connection no problem. I check to see that I am connec… --- ## [Toyota Camry 2009 XV40](https://forum.realdash.net/t/toyota-camry-2009-xv40/1450)
**Author:** [@Kaelub](https://forum.realdash.net/u/Kaelub)\ **Replies:** 3\ **Last updated:** [October 27, 2022, 5:27am UTC](https://forum.realdash.net/t/toyota-camry-2009-xv40/1450 "2022-10-27T05:27:05Z")
So I tried using this protocol and it couldn’t connect, but if I do generic OBD2 then it works. I would think 2009 is new enough to use the Toyota protocol. I’m trying to use the cars factory AT fluid temp pid. It wor… [Next page](https://forum.realdash.net/c/connectivity/obd2/35.md?page=1)