Skip to main content

Questions tagged [obd]

An acronym; On Board Diagnostics.

Filter by
Sorted by
Tagged with
0 votes
0 answers
34 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
  • 101
1 vote
1 answer
56 views

2013 Chrysler T&C OBD throwing P0480, low speed fan runs fine when commanded through OBD. How is the fan condition sensed by the ECM?

I tested the TIPM relays and fuses; all are good. Confirmed that J19 and K11 have power. Confirmed with Thinkdiag2 OBD that ECM can start and stop low speed fan. Watched fan control signal signal ...
Taryn's user avatar
  • 111
0 votes
0 answers
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
  • 385
1 vote
1 answer
47 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
0 votes
0 answers
80 views

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
0 votes
0 answers
46 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
  • 17k
0 votes
0 answers
128 views

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
  • 163
1 vote
0 answers
374 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
1 vote
1 answer
275 views

Does OBD2 Hud Display use battery if only the cable is connected but not the device itself?

I have an OBD2 hud display. It consists of the obd2 cable, and the device itself. Cable can disconnect from the device. If I leave the cable plugged in, but the device is disconnected from it, does it ...
Antonis's user avatar
  • 11
-1 votes
1 answer
839 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
1k views

Do OBD2 Hud Head Up Displays use battery when engine is off?

I am buying an OBD2 Head Up Display. It has a screen where it shows readings etc. Manufacturer claims the item turns off when the engine is off too, and this is true from the videos I have watched. It ...
Antonis's user avatar
  • 11
2 votes
2 answers
594 views

Honda Civic 2002 strange OBDII pinout

I have some trouble understanding the pinout of my OBDII plug. It appears that it has both grounds, K-Line, 12V and CAN Bus low (according to standard obdII plug). Therefore it does not have even one ...
Wintermute's user avatar
0 votes
0 answers
49 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 ...
user avatar
0 votes
1 answer
88 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 ...
Kilauone's user avatar
2 votes
2 answers
2k 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 ...
av4625's user avatar
  • 121
11 votes
8 answers
5k 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 ...
hb20007's user avatar
  • 735
-1 votes
1 answer
180 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
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
1 answer
50 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 ...
yigal's user avatar
  • 103
2 votes
2 answers
163 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 ...
Erick Turla's user avatar
0 votes
0 answers
146 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 ...
Saad's user avatar
  • 1
0 votes
1 answer
302 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 ...
Alex Ștefan's user avatar
5 votes
3 answers
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 ...
Mowzer's user avatar
  • 151
1 vote
0 answers
19 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.
user55309's user avatar
2 votes
1 answer
104 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 ...
Ali Somay's user avatar
  • 131
-1 votes
1 answer
32 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 ?
locost's user avatar
  • 1
0 votes
1 answer
188 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 (...
mang's user avatar
  • 53
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
0 votes
0 answers
61 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+...
Rafal's user avatar
  • 1
0 votes
3 answers
351 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 ...
the_photon's user avatar
1 vote
1 answer
228 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 ...
Amin Rezaie's user avatar
5 votes
1 answer
2k 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 ...
Adnan's user avatar
  • 51
1 vote
1 answer
349 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
2 votes
0 answers
54 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 ...
Hanynowsky's user avatar
0 votes
0 answers
85 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
1 vote
0 answers
278 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
  • 151
1 vote
1 answer
174 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 ...
Dudu Gvili's user avatar
0 votes
2 answers
95 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 ...
Allan Xu's user avatar
  • 950
0 votes
3 answers
1k 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 ...
Edgar's user avatar
  • 121
1 vote
0 answers
2k 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 ...
TylerIn's user avatar
  • 11
1 vote
2 answers
956 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
  • 141
2 votes
0 answers
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
  • 141
1 vote
2 answers
771 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 ...
Johnston Tang's user avatar
1 vote
0 answers
31 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 ...
Graham Kennedy's user avatar
2 votes
1 answer
228 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 ...
Falcon's user avatar
  • 21
5 votes
1 answer
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 ...
Nameless's user avatar
  • 181
0 votes
1 answer
79 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. ...
PagMax's user avatar
  • 143
1 vote
0 answers
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
0 votes
1 answer
234 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 ...
James Wilson's user avatar
  • 2,736
0 votes
1 answer
9k 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 ...
naidu anvesh's user avatar