Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [elm-327]

30 questions
33
votes
12 answers

Can a vehicle be harmed with bad inputs via an OBD-2 port?

I bought a cheap (sub $10) ELM 327 Bluetooth clone OBD-2 diagnostic adapter on a local "ebay-style" market where the seller specializes in car diagnostics and has several thousand positive reviews (read: I guess this seller would not provide…
Kozuch
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9
votes
1 answer

ATMA on OBDII not Working

I have successfully connected a terminal android app to the obd port of my car. And tried dry run of many at commands, many are working as expected. But ATMA (AT command to Monitor All) is not responding. Trying to view all the can…
vinay
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7
votes
1 answer

What does it mean when the ELM327 OBD2-reader gives two lines of info for 0100 request?

I have an ELM327-based OBD2 reader that I can issue commands to when connected to a car. I'm running this on a 2015 Acura RDX. When I issue the request 0100 to get supported mode 1 PIDs, I get the following two responses back: 41 00 98 3A 80 03 41…
Ana
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6
votes
2 answers

Decoding VW Airbag DTC from elm327

I am using PuTTY (similar to HyperTerminal) and elm 327 (OBD Link LX) on my VW Polo 2015 model to read Airbag DTCs. Command sent: AT SH 715 Received: OK Command sent: AT CRA 77F Received: OK Command sent: 19 02 08 Received:…
Soumya Sen
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5
votes
1 answer

can elm327 (bluetooth,wifi) adapters read and clear airbag(srs) codes?

There are a lot of bluetooth and wifi obd adapters but only a handful of them(e.g blurdriver) claim that they can read and clear abs and srs codes, so I'm wondering whether a cheap elm327 based adapter can deal with srs and abs modules?
MOHAMMAD RASIM
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5
votes
4 answers

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 get things like engine RPM, speed and temperature…
rafaame
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5
votes
2 answers

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 anyone suggest a method of how I can discover the…
Soumya Sen
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5
votes
1 answer

Does Fiat need dedicated FiCom OBD hardware and software for diagnostics?

I got an ELM 327 with Bluetooth from my brother in law. We have tested it in his Chevrolet Aveo with several apps and it works like a charm. When I tried it on my Fiat Panda 2012, the apps couldn't connect and some apps notify me that no compatible…
ChP
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4
votes
1 answer

Android App for ELM 327 that allows to reset codes for Cadillac CTS

On my Cadillac I get engine light to come up because I have changed my petrol cap and sensor is malfunctioning. I got myself wifi ELM 327 OBD-2 reader, and by using my laptop I managed to get RPM of engine - it must work. However full version of…
Matas Vaitkevicius
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3
votes
0 answers

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 data garbage? Or the data might contain zero(s)…
Soumya Sen
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3
votes
0 answers

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 all looks like it is working fine. But once I try…
lonerunner
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3
votes
0 answers

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 on. (There was no other vehicles or obstacles…
Madushan
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2
votes
1 answer

Flow Control for Multiline Responses for Custom 15765-4 CAN messages over ELM327

I am using an ELM327 adapter to talk to the OBD2 port on my car over ISO 15765-4 11b/500k. I want to query for non-standard messages outside of standard OBD2 PIDs, (which I have separately logged from a diagnostic tool). I am trying to reproduce…
LordVonPineapple
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2
votes
0 answers

Read vehicle speed from Isuzu D-Max 2015

I'm using an OBD reader with Elm327 v1.5 chip. I have made a software that reads vehicle speed (pid 010d). This software works ok on VW Transporter and some other cars but not on Isuzu D-max MY 2013-> The software tries the different protocols by…
Martin
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2
votes
1 answer

ELM 327 How i can know a calculated CO CO2 HC & NOx with ELM OBDII? Is it possible?

I have a question, if i have many codes from my ELM 327 OBDII, Mass sensor, Km traveled, Lambda, Temp, fuel pressure, gallons x time, engine load.... hao i can calculated these emissions?
Rafael Angel Monzon Pingarron
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