Questions tagged [obd-ii]

On-Board Diagnostics-II (OBD-II). Questions usually involve scan tools, their use and their compatibility, as well as how to interpret Diagnostic Trouble Codes (DTCs).

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2answers
782 views

Emission performance of a vehicle using OBD

The California Air Resource Board uses OBD scanner for emission testing. (https://www.arb.ca.gov/msprog/obdprog/obdprog.htm) In other places like India, 'tail pipe exhaust gas analyse' method is ...
2
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1answer
789 views

OBD2 steering angle PID

I'm trying to get the steering angle of my car via the OBD2 port. I'm using a usb adapter, and Pyserial to read from it. I found this: https://en.wikipedia.org/wiki/OBD-II_PIDs Which lists the PIDs ...
3
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1answer
620 views

P2104 Throttle Actuator Control System Forced Idle error, but car runs fine

2 days ago, I had to jump start my 2009 Chevrolet Aveo. I suspect I left the interior light on all night which drained the battery. After I started the car, the engine warning indicator was on. (It ...
3
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3answers
255 views

Is there a viable option for updating OBD-I to OBD-II in order to increase possibility of engine tuning?

I've been told this is a terrible idea and just wanted greater confidence even though the warning against has been taken. I want to be able to fine tune a 1990 car with an OBD-I port in addition to ...
5
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2answers
1k views

Cannot Access ABS-control-unit with ODB2-adapter

I have an ODB2-Bluetooth-Adapter(link) to access the ODB-Protocol with my android-smartphone. It is basically working. The app that I use ("Torque") can connect to the ECU, shows me different values ...
5
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1answer
1k views

What does the ECU use the long term fuel trim for?

I have a 2001 Honda Prelude SH (Honda H22A4 engine). I was trying to determine how the reported short/long term fuel trims fit in to the fuel control loop (in particular I was wondering if the long ...
2
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1answer
2k views

Interpreting O2 sensor readings

I have a 2001 Honda Prelude SH (Honda H22A4 Engine). The exhaust has two oxygen sensors; one before the catalytic converter (sensor 1) and one after (sensor 2). Holding at 2500 RPM and sitting still ...
4
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1answer
605 views

How to calculate fuel consumption and CO2 emission on flex fuel cars using OBDII data?

Here is the thing: I'm trying to estimate the fuel consumption of cars using OBDII data. It's quite simple if we can treat each fuel and its stoichiometric air fuel ratio separately, but when it turns ...
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0answers
290 views

Difference between black and blue eml327 diagnostic tool

I've recently bought an Alfa Romeo 147 1.6TS 2001 105hp(77kw), and the previous owner had an instrument, or gauge, or mileage table replaced along with electrical window and mirror button table on ...
2
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1answer
1k views

Dodge Durango Transmission Temperature via OBD2

How can I read the transmission temperature on my 2012 Dodge Durango 5.7L Hemi via OBD2 (a wifi adapter - using Torque for Android and DashCommand for iOS)?
2
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1answer
145 views

Trouble Code decoding

I've got a trouble code in my car and unable to figure how to decode it. 008 0: 43 03 00 59 01 54 43 00 1: 01 55 AA AA AA AA AA I can understand the response is in multiple frames, but unable to ...
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0answers
682 views

Oil, brake, servicing reminder lights turn off using OBD-II

I am doing a project to reset oil, brake, servicing reminder lights etc. using OBD-II Bluetooth scanners (VGate and OBDLink SX Scan Tool). Basically, trying to do what enhanced OBD-II scanners are ...
9
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3answers
53k views

Do fault codes get recorded with a time stamp into a log with a history of DTCs?

Just scanned my vehicle for the first time to check out the code for a Check Engine Light. I grew curious if these fault codes get logged somewhere with a date and time stamp of some kind at the time ...
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0answers
513 views

Door Monitoring Through OBD-II Bus

I have a Ford Fiesta Style (05) and was wondering if it would be possible to determine the status of the doors of the vehicle through the OBD-II bus? In particular I want to know whether or not the ...
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2answers
1k views

What data are OBD-II scanners capable of logging?

I've been reading that certain scanners are capable of logging data that can be recorded while driving. What sort of data are most popular to be recorded? Can someone comment with examples of data ...
9
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2answers
3k views

2000 chevy cavalier cheap upgrades

I am a high schooler that was lucky enough to get a 2000 chevy cavalier 2.2l automatic 4 door sedan for $100 for my 16th birthday. One of the parents owns a drag strip/race track that we can use, so ...
5
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0answers
861 views

Difference between FMS and OBD

What is the difference between FMS and OBD. Whether OBD is a standard or protocol. Recently I am working on a GPS device to tap the CAN bus in order to integrate with our fleet management system. In ...
3
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0answers
230 views

Mazda 3/Axela RVM light when OBD2 adapter connected

I have connected a OBD2 adapter (Bluetooth ELM327) to my 2010 Mazda Axela (1990cc) and I've noticed that when my phone is connected to the adapter, the Mazda RVM alert lights on the side mirrors come ...
4
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2answers
415 views

Does a CEL always result in an OBDII DTC?

Will any error which causes the check engine light to go on show up as a DTC during a regular OBDII scan? This is obviously only in relation to OBDII compliant vehicles. EDIT July 26th, 2016 So I ...
3
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3answers
950 views

Retrieving handbrake status light and reverse light from OBD II

I have a project to replace my car's instrument panel with a Android tablet. So I'm developing an application that communicates with an ELM327 device through bluetooth. I have managed to successfully ...
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1answer
581 views

Honda Accord Maintenance Minder accidental reset/ what to do now?

I changed the oil on my 2015 Honda Accord LX myself for the first time. Following a YouTube video, I reset the Maintenance Minder. The problem is that I didn't note the extra codes that show up on the ...
2
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1answer
2k views

Which is the Best Scan and Diagnostic tool for Asian Vehicles? [closed]

I am looking for a Scanner and Diagnostic tool that will be used for Asian Vehicles. I am not sure which scanner to buy which works with Asian makes like Toyota, Hyundai, Kia, Mahendra, Suzuki and ...
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0answers
529 views

P1070 code error for mitsubishi space star

A few days ago - started engine in morning and while in neutral and engine cold it immediately revved to 2000 rpm... much higher than normal... once engine warmed up it drops.... but now engine ...
5
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2answers
5k views

DIY OBD II “Memory saver”

Since I had a need for a "memory saver" while changing a battery on a 05' S500 I decided that instead of borrowing one from a friend all the time, I will make my own.. Now isn't it just a power supply ...
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2answers
4k views

Are there any OBD scan tools compatible with a Volvo V50 2005 Europe

I understand this is not a website to ask for specific products. I have spent nearly 3 hours on the web trying to find a scanner that will be able to read and erase codes from my Volvo V50 2005 Europe ...
6
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3answers
1k views

Tapping into the on-board computer

I'm thinking of replacing my car's radio panel with a custom built Raspberry Pi device, something like this device. However, it's usefulness would be much larger, if I could get information from the ...
5
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2answers
573 views

Find all modules supported in my car

I own a Mahindra Scorpio S10 (2015 model) and want to find out what modules are there in my car (ECM, TCM, Body Control Module, Suspension control module etc.) using an ELM 327 Bluetooth device. Can ...
4
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1answer
4k views

Does OBD II pin 16 output is always 12 Volt?

Does OBD II pin 16 output is always 12 Volt? Is it possible to the voltage is altering when ignition on, like rising from 12 to 14 Volt? Or Voltage output of the buses, trailers, heavy duty vehicles ...
3
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1answer
1k views

Auto door lock does not work with automatic transmission shifting to and from “Park”

My Toyota Corolla 2014 Altis auto door lock has not been worked. I read Electric central door lock does not work with automatic transmission shifting to and from “Park” and also Toyota Corolla ...
6
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1answer
529 views

OBD Accessory External Power Supply

I recently purchased the Zubie Car Hotspot from Verizon that connects to the OBD port on a car. I have mine connected to the Tesla Model X, unfortunately I need the connection to remain always on but ...
3
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0answers
339 views

2005 Impala OBD2 not working right

I have a 2005 Chevrolet Impala (Base trim, 3.4L) and I recently purchased a cheap OBD2 Bluetooth reader. Unfortunately, Torque (Android app) isn't able to read data from this transmitter when ...
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1answer
2k views

How to detect Passenger Seatbelt Indicator using OBD2

I have trouble code information as below for B00D1 OBD Trouble Code which use to detect Passenger Seatbelt Indication. I am referring below links to get trouble code information: http://www....
7
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2answers
8k views

What's the Difference Between OBDII adapters and Toyota Mini VCI?

I've been researching Toyota diagnostic connectors, and ran across something called a Mini VCI adaptor meant for use with Toyota's TechStream software. The physical interface looks like a standard ...
4
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1answer
510 views

What kind of DLC did Toyota's have before switching to OBDII?

What kind of DLC did Toyota's have before switching to OBDII? What year did they switch to OBDII outside the United States?
2
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0answers
77 views

Translating raw CAN responses into meaningful min/max/value

http://www.scangauge.com/support/x-gauge/xgauges-for-cansf-vehicles/ This website lists data reported by certain sensors. Lets take an example: Gauge = Short Term Fuel Trim Bank 1 TXD = 07E00106 ...
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0answers
2k views

OBD-II Enhanced PIDs

I was looking at the Torque Pro app and in the section where there is a list of custom PIDs that can be used, one is a Transmission Temperature PID. But it is exactly same as Engine Coolant ...
3
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3answers
83 views

Auto determine the bluetooth device is OBD or not?

Current I am working on OBDII. While in bluetooth discovery to connect obd, How I determine which device is obd and which device is normal bluetooth device.Because I want auto connect my app with obd. ...
4
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1answer
64 views

Mode 06 approaching failure limit

In Mode 06 (OBD), one gets a current value, max value and a min value for every MID, TID supported. If the current value is out of the max/min range, that MID, TID is considered a 'Fail'. But there ...
5
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2answers
345 views

1989 Chevy Scottsdale 2500 HD 5.7 liter 350

I have just finished a body off restoration of my 1989 Chevrolet Scottsdale 2500 HD. My question, is there an OBDI or OBDII or do I need a adapter to scan it? Even if I rebuilt the engine and ...
3
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1answer
198 views

Interface tracking device with OBD II (or alternative sources of data)

I have recently been working on writing software for some very small tracking devices. I decided to take on an electronics engineer and start building some boards myself using a GPS/GPRS module. I ...
5
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3answers
6k views

Mode 02 - Freeze frame data use

I got some data on sending 0202 command (Mode $02, PID 02). It is the freeze frame data. I don't understand why does anyone need the data? Do anyone (including mechanics) ever open Freeze frame data? ...
3
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1answer
386 views

My 2005 Honda Accord with OBD codes: 0507 and 0011. Howto Troubleshoot

The check engine light came on very recently with two error codes being thrown. From this source, the following will cause 0507 P0507 HONDA - Idle Control System RPM Higher Than Expected A vacuum ...
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2answers
7k views

Is it Possible to Control Lights through OBD-II Port?

Is it possible to use a car's onboard diagnostic port to toggle the headlights, interior lights, or parking lights? If not through the OBD-II port, how would I go about remotely toggling the lights on ...
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3answers
1k views

How do I get to see my Mode 06 in OBDii

Mode 06 in OBD2 is good to get an insight of what faults the car might encounter in the future. But I am unable to find out what command should I send to get Mode 06 data. It has TID$01 CID$01, so how ...
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1answer
5k views

How can I calculate MPG using an OBD-II Device

OBD-II provide following readings Mass Air Flow (PID 0166) Fuel–Air commanded equivalence ratio (0144) Can these be used to calculate the actual fuel consumed? Is the output correct?
2
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1answer
960 views

Detect AC(on/off) and Window(open/close) of CAR using OBD

Is there any way to detect AC(air conditioner) and Window(open/close) using OBD? I am putting links below for the OBD reader but I am unable to find any way to detect the AC(air conditioner) and ...
4
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3answers
223 views

(Mandatory in the EU) CAN through OBD-II?

I know that in the US, since 2008 vehicles must have a CAN connection on the OBD-II plug, but what about Europe? Do vehicles have to add CAN to the OBD-II plug? Or is it possible to directly send ...
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1answer
2k views

Toyota Fortuner OBD2 protocol

I used an ELM 327 and Torque app in one of my friend's Toyota Fortuner (2012 model), but didn't get correct data. Rpm was nil, Air intake temperature was negative, Load was constant at 6.66667%. After ...
3
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0answers
3k views

Ford Focus 2008 Error code: P2585-61

I own a Ford Focus 2008 1.6 TDCI. Recently I filled the DPF Additive tank with EOLYS Fluid but I couldn't regenerate and reset the values that day, so I drove to my home. Following day, I went to ...
6
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1answer
38k views

Nitro OBD2 SCAM OR WORK? [closed]

I was looking into general car stuff like storage and lights the general stuff. I ran into a device called a "nitro OBD2" they have one to save fuel one to generate more power and stuff. Looking into ...