Questions tagged [obd]

An acronym; On Board Diagnostics.

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2answers
386 views

OBD2 device that connects over cellular data?

I'm looking to monitor any and all stats of my vehicle. Are there any OBD devices that connect remotely over cellular data, and come with a nice phone app? I'd like to be able to monitor the car from ...
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2answers
71 views

obd2 device on obd1 vehicle?

is there any way to make a obd2 plug in device (example gps tracker Metro Smart Ride) work on a obd1 vehicle. The device works and still has service. I no longer own a vehicle with obd2, but I'd still ...
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1answer
41 views

Can anyone offer advice on MUTILPLE codes all seeming to deal with my transmission

2001 Ford Taurus Wagon with 124K miles Duratec engine Drive car yesterday and everything seemed fine. Came home and parked it like always. Today the car runs but both the check engine light and the ...
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1answer
135 views

OBD2 port construction, Toyota Camry 95, and Dodge Durango 2002

I have a product that takes an OBD 2 plug for power and I don't want to use my standard OBD port. I need to create an OBD 2 port for power purposes only, how could I do this and does the port run at ...
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2answers
59 views

How does OBD2 work with CAN?

I understand how CAN works (I think). Good info here if you would like to see: Difference between OBDII and CAN So very briefly, there are multiple modules and each module posts interesting data on ...
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0answers
31 views

How and what would I get from a car rain sensor?

I am looking for an answer on how to acquire data for the vehicle rain sensor and automatic wiper data from any vehicle. For example, I know that with Carberry (a Raspberry Pi) it provides a lot of ...
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4answers
2k views

How to power up OBD device without ignition to vehicle?

i would like to power on the obd device without ignition to vehicle. Am trying to establish some connection for programming work buy connecting to my laptop. Any way to do this?
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1answer
36 views

Obd2 not working, need to rewire

1996 chevy p30 5.7L Obd port wasn't working. After I looked under the dash it's apparent someone has cut all the wires and never wires them back in. I guess there was front end damage so I assume they ...
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8answers
3k views

What is the point of performing an OBD2 diagnostic scan if there is no malfunction indicator?

Where I live, it is common for car mechanics to help their customers who are planning to purchase a new used car by performing an OBD2 diagnostic test on the car in question, even if there are no ...
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1answer
154 views

How difficult is it to collect obd commands ?Will it be different for different brands?

OBD is something very interesting I found these days.Thanks to this repo https://github.com/pires/obd-java-api & wikipedia which provides the basic information of PIDs.But there is a lot of ...
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3answers
1k views

Could you instruct a car thru the OBD port to open the trunk even if the car was turned off?

Could you instruct a car thru the OBD port to open the trunk even if the car was turned off? Can you turn the accessories on from the port then open the trunk?
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0answers
185 views

How do I factory reset an OBD2 ELM327 device (not reset ECU)?

it no longer puts out wifi thank you tried turnning it off for a day, it has no reset button on the unit or PCB here is more information: Here is more information https://security.stackexchange.com/...
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1answer
39 views

how to check car for impending failures? [closed]

My kia Sorento 2007 failed on me multiple times. Each time disabling the car and putting the driver in danger harmonic balancer alternator radiator and water pump in each of those failures, I had ...
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2answers
304 views

Re-wiring OBD port

I was reading online about thieves 'hacking' the OBD2 port on push button start vehicles and there seems to be little discussion around OBD2 port locks or moving OBD ports. I was wondering if any has ...
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0answers
10k views

Reading OBD Data from the Old Honda 2+3 Pin DLC

I've got a 2000 Honda Civic iSR with the old 2+3 pin Honda DLC which I'd like to read ECU data from. According to the Evoscan website the pinout for the 3 pin dlc is ISO 9141 K-Line, B+ and ground ...
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0answers
99 views

Are OBD-II devices capable of controlling acceleration and top speed of a car? [duplicate]

I have been searching for a while for some specific type of OBD-II devices that can, besides performing the usual diagnostics, also do the following: GPS track the car online Has the ability to set ...
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1answer
89 views

Using a device with external power and receive data from the CAN bus

I want to keep a device in always on situation in the car. I do not want the device to drain the car battery. The car is used at least once in two days and the current consumption of my device is ...
4
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3answers
1k views

How useful is a low-end corded OBD-II reader for inspecting a used car?

I purchased a low-end OBD-II reader from Wal-Mart a few months ago. Now I'm in the market to purchase a used car and I was wondering how useful the reader will be when I go to look at the vehicle. Of ...
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1answer
61 views

0v across CAN bus lines

I am trying to connect to the CAN bus of a heavy trucks 24V OBD2 port. I have already tested my setup with a van, and confirmed it working. The only differences I can see between the 2 vehicle's ...
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0answers
15 views

Incomplete Monitors

I changed my Hyundai 2000 Accent battery and My CAT and EVAP monitors will not complete. I have tried a generic drive cycle and monitors will not complete. Any suggestions.
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1answer
77 views

Electricity not working when car is off

2015 Honda Accord Replaced the battery in my wife's car. After replacing the battery, it seems as though none of these things work when the car is off - Headlights, Dome light, Power locks, key fob (...
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1answer
26 views

any obd dongle with the ability to stream live data ie CO2, HC and NOX?

any obd dongle with the ability to stream live data ie CO2, HC and NOX ?
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0answers
146 views

Problem diagnostic on Toyota Estima

In relation to my previous question: Hybrid battery not charging fully This morning I took the vehicle to the mechanic who has serviced all of my cars for the last 10 years. He called me later in ...
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1answer
114 views

Siemens sim2k-34vr ecu parametrs and service ids

I need to read parametres like RPM of the engine from siemens sim2k-34vr ECU from obd2 port through K-line protocol,I tried standard service id 0x01 to read current data but ECU said 0x01 service id ...
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0answers
27 views

Manual calculation of engine load [duplicate]

Calculated engine load (PID $04) is determined (according to SAE J1979) by equation: LOAD_PCT = [current airflow] / [(peak airflow at WOT@STP as a function of rpm) * (BARO/29.92) * SQRT(298/(AAT+...
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3answers
48 views

Broad question about sensor replacement in cars in general

As a shade-tree mechanic, I am rather frightened of doing repair work that involves disconnecting or replacing sensors in general. One of my fears goes like this: I hear stories of people performing ...
5
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1answer
796 views

About heavy-duty vehicle diagnostic port

I am trying to design an ELD device that could be connected to the deutsche 9 pin and 6 pin port on heavy-duty vehicles. Is there any place where I can get the pinout configuration of these ports for ...
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1answer
421 views

OBD2 expert in ipad to bluetooth elm327 mini

Just bought OBD expert on grounds good to go in an ipad (version 9.3.5 13G36) It just wont detect the adapter from my ipad. Adapter is fitted and red light on. Am I wasting my time with an ipad and ...
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0answers
32 views

Bmw N52N Lambda probes madness

Owner of a BMW E60 523i LCI Automatic (N52N engine. aka N52k). 105000 Kms on the clock. The error codes below after deletion, re-appear after 300~400 Kms. It is theoritically impossible for 4 lambda ...
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0answers
48 views

Car hacking - e.g. auto closing windows when locking

Im new to car hacking. I want to modify my car. The target is that the windows close automatically when i lock the car. I found out that I can use the CAN2USB Device to connect the car to a linux ...
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2answers
74 views

Oxygen Sensor Engine Light

I had Oxygen Sensor Engine Light that complained about the Bank 1 Sensor 1. I used my OBD2 tool to clear the code, and the engine light is not coming back. Can I leave the sensor as is or still I ...
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1answer
53 views

Use OBD to check car status

i wanted to know if it's possible to use a cheap OBD scanner connect the car to a computer and see the status of the locking system, if the car is locked or not, i dont want to change or send orders ...
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3answers
603 views

Are all OBD current data available on the CAN-BUS without request?

I am analyzing the CAN-BUS data from my motorcycle. I logged all the CAN-BUS traffic. One time with an ELM327 adapter connected and one time without. I am searching for the value of the Intake air ...
3
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3answers
99 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. ...
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0answers
779 views

P0340 code, even after camshaft sensor replacement [Solved]

I drive a 2004 Honda Civic ex coupe manual with ABS, engine code D17A2 (SOHC, Vtec) I was driving my car and slowly revved up to 7krpm (smart, I realize) and suddenly my car lost power until 3500rpm ...
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0answers
1k views

Can an OBD2 device be used to limit vehicle speed?

Is it possible? And if so, which OBD2 device can do it?
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0answers
14 views

Konnwei kw30 diagnostic equipment

Just got a konnwei kw830 diagnostic tool I plug it into my car which I know has a fault as I have checked on another system and that comes up with fault key 1 which means my car key has lost its ...
5
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0answers
2k views

On Board Diagnostics-II for Electric Vehicles

I'm learning about OBDII, and I'm wondering whether it is valid on EV's too. According to Wikipedia's PIDs article, the Service 01 PID 51 (or Fuel Type) has a value 8 that means that the fuel type ...
5
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2answers
14k views

What is Honda HDS HIM?

I've been trying to find inexpensive PC based ways to connect to the older Honda's which use the 3-pin OBD connectors. I have run across a package being sold in various places called Honda HDS HIM. I ...
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1answer
52 views

How to save time history of cars' performance parameters with or without OBD

For a research study purpose, I am trying to get car's performance data i.e. speed, acceleration, maps (lats & longs) and may be braking during a drive. I need time histories of these parameters. ...
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0answers
44 views

Where are the Logics and Data of the OBD System Stored?

I'm wondering if OBD Data is stored and processed on it's own board or integrated into other systems, or both. Or neither. Wikipedia just confused me further. What I got out of the wiki is that OBD ...
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1answer
119 views

Lost keys and have no obd port, what should I do?

Car is a civic vti 1999. Lost the keys and auto locksmith is saying he needs the obd port otherwise he can't reprogram it. I cannot find it on the car and a friend tells me these hondas do not have ...
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1answer
6k views

Car suddenly stops accelerating and overheat indicator comes on

Vehicle: Skoda Fabia TDI 1.2L diesel While driving back home, the car suddenly stopped accelerating and the RPM was stuck at 1000, even when I applied more gas. Immediately after, the overheat ...
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0answers
87 views

Truck's exhaust temperature: how to read EGT sensor by ODB / FMS / Can-bus?

I succesfully decoded can-bus data from a VW Caddy, but know nothing about OBD and trucks. For a research I need now to read a truck's exhaust temperature (EGT sensor), possibly by OBD. I would ...
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1answer
196 views

What do all these codes mean? 125331324255

My 1994 Jeep Grand Cherokee limited was running great, as always, but then a few day ago it didn't want to idle some times and without a shudder or misfire etc. the RPM would drop down to zero and die....
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0answers
250 views

Trying to access mode 22 data

I'm trying to get mode 22 diagnostic data from my 2006 Chrysler Sebring 2.7L and more specifically the misfire counts for each cylinder. I have an ELM327 that I'm using. My car uses the J1850 VPW ...
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2answers
6k views

Horsepower at wheels calculation

I have used Torque Pro App for sometime in my Hyundai i10 Era (2011 model) and it gives me Horsepower at wheels. But the values seems to be much less. To find out the problem, I logged the car OBD ...
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3answers
2k 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 ...
4
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2answers
903 views

OBD or CAN - what's mandatory (EU and US)

First of all, I've already tried to do my research and tried to get all the info I'm asking for myself (which obviously didn't work). I want to know if CAN or OBD(-II) are in fact mandatory in the US ...
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1answer
138 views

Toyota Avensis Verso 2002 (sold in Italy) CLM20L - which OBD version compatible?

I seem to have problems with nailing down the interface version of the OBD socket in my car. Is it OBD, OBD2 or EOBD compatible? I know the differences between them in theory, but there is no solid ...