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Questions tagged [obd]

An acronym; On Board Diagnostics.

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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 ...
Nameless's user avatar
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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 ...
Dineshkumar's user avatar
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396 views

CAN data for Mahindra

I bought a new Mahindra Scorpio S10 and have been trying to read the CAN bus using ELM 327 Bluetooth OBD and Putty. Configurations in Putty: Baud Rate 9600 (tried 115200 also), Data bits: 10, Stop ...
Soumya Sen's user avatar
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3 votes
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Less than specified bytes of data from OBD

0100 (https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_1_PID_00) should provide 4 bytes of data. But there has been cases, like Audi A4 2.0 TDI, where the data from 0100 was less than 4 bytes. So is the ...
Soumya Sen's user avatar
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SilLabs OBDscan can't connect to Alfa 147: latency too high!

I have an OBD Scan tools built around the Silicon Labs CP210x chipset, but I can't get it to connect to my car at all. When I connect the scan tool to my laptop USB port I have a driver installed and ...
lonerunner's user avatar
3 votes
1 answer
14k 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 ...
Robert S. Barnes's user avatar
3 votes
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518 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 ...
trademark's user avatar
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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 ...
Hanynowsky's user avatar
2 votes
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3k views

Can an OBD2 device be used to limit vehicle speed?

Is it possible? And if so, which OBD2 device can do it?
trusktr's user avatar
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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 ...
Falcon's user avatar
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Catalyst Temperature

Please refer to Catalyst Temperature PIDs (mode 01 pids 3C, 3D, 3E, 3F) for the following questions - https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_01 Q1. Is there a thumb rule that the catalyst ...
Soumya Sen's user avatar
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2k views

What is the difference between Toyota GTS and TIS software?

I've found two types of Toyota OEM software available. One is the GTS ( Global Tech Stream ) software which is freely available from Toyota's EU site. The other is the Toyota TIS ( Technical ...
Robert S. Barnes's user avatar
1 vote
1 answer
51 views

Will fixing first OBD2 misfire codes resolve the cascade of others downstream?

Looking at a car my kid wants to buy. 2012 Honda Civic LX. One owner, some service records, seemed to run fine in test drive. No colored exhaust gasses, no dashboard lights, sped on freeway, sudden ...
Stay-at-home-dad's user avatar
1 vote
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391 views

What is the difference between OBD1 and OBD2?

In my car (BMW E46 323I 1998) I have both connectors, that is, the 20-pin OBD1 and the OBD2, what is the difference between the two, I am referring rather to the functionality in my car, that is . ...
David Gonzalo's user avatar
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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.
user55309's user avatar
1 vote
1 answer
354 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 ...
user51456's user avatar
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279 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 ...
Aleks G's user avatar
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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 ...
TylerIn's user avatar
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1 vote
2 answers
973 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 ...
trusktr's user avatar
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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 ...
Graham Kennedy's user avatar
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76 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 ...
reheiser's user avatar
1 vote
0 answers
382 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 ...
carlj12's user avatar
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CAN Signals on OBDII

What CAN messages & signals are freely accessible through OBD-II? Can manufacturer close certain signals or only propretary ones? I know all CAN signals can be accessed but not interpreted ...
Met Man's user avatar
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Calculate Intake Manifold Absolute Pressure from MAF Engine using OBD Data

I need to calculate Intake Manifold Absolute Pressure from OBD Data. I have Toyota Corolla GLI 2010 Model. This car has MAF engine which does not return Intake Manifold Absolute Pressure. Where'as I ...
Zeeshan Shakil's user avatar
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0 answers
37 views

Car Stalls After Running AC Heating System

My 2011 Nissan Rogue is stalling out on me. The first time this happened was after going over a speed bump in heavy snow - I sent it to a garage and they told me that there were "No OBD Codes To ...
Zibbobz's user avatar
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28 views

Can a cheap OBDii reader plus an adapter cable read the fault codes from a 1999 BMW 316 compact?

I have a 1999 BMW 316 compact auto (e36) with a minor engine problem, I think it goes into "get you home mode" until it has warmed up. I also have a cheap Elm327 WiFi OBDii Interface ...
User65535's user avatar
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Our custom OBD II reader when plugged in drops engine rpm to 0 along with turning on engine check light

We are a small startup who are trying to develop their own obd2 reader. We were able to get live rpm reading from our car but when the same device was plugged into an Eicher truck (BS 6 Engine) the ...
Nitesh Singh's user avatar
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0 answers
48 views

How to diagnose Mercedes E320 ESP warning?

My 2007 Mercedes W211 E320 CDI bottomed out on a deeply rutted road this past weekend, now I'm getting an ESP (traction control) inoperative warning on the dash. I've had a look underneath and there's ...
GdD's user avatar
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ISO 9141-2 protocol overview

Is there a free overview of the ISO 9141-2 (K-Line) protocol? I'm looking for basic handshaking info (master control), structure of a frame, etc. The only information I could find was a for-sale ...
TSG's user avatar
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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 ...
user avatar
0 votes
1 answer
2k 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/...
user3265051's user avatar
0 votes
4 answers
6k 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?
JingCha's user avatar
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0 answers
86 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 ...
NikolaTesla's user avatar
0 votes
0 answers
130 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 ...
Alex Poca's user avatar
  • 101
0 votes
1 answer
439 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 ...
Parick's user avatar
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-1 votes
1 answer
871 views

Will OBD2 Hud Head Up Display drain car battery if left plugged when car is off?

I am buying a HUD Head Up Display. It goes in Sleep Mode when ignition is off (screen turns off). I asked the manufacturer, they said it uses 0.3mAh when in Sleep Mode (400mA while in use). Is this ...
Antonis's user avatar
  • 11
-1 votes
1 answer
182 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 ...
Brandyn Backus's user avatar