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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).

75 questions with no upvoted or accepted answers
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295 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 ...
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529 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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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 ...
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658 views

VAG TP 2.0 complete list of AT commands

I am trying to find DTCs from various ECUs in a Skoda Rapid 2009 model. I am using OBDLink SX (elm 327 chip) and Putty (similar to HyperTerminal) https://jazdw.net/tp20 This link gives the list of ...
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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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25 views

04 Astra TS CDX: traction control light on, then power loss. No codes

This is the Australian model (Holden). Automatic transmission. About a month ago I was driving normally and the service light and traction control light came on at the same time. Performance didn't ...
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14 views

Volvo - send commands to read DTCs

I tried finding out the commands a diagnostic tool sends to my Volvo and I got this - 1D D0 16 16 03 22 F1 86 Protocol - CAN 29/500 (elm command: AT SP 7) Can someone help me with the method to ...
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16 views

What does P0328 means?

Knock sensor High Input The problem reappears even by clearing the error with the knock sensor unplugged… Is it something expected ? Does it necessarily mean there’s a short circuit ? If not what ...
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70 views

OBDLink Settings for Fuel Economy

Specs: App: OBDLink v5.4.1.1072 (iOS) Adaptor: OBDLink MX+ (bluetooth) Vehicle: 1999 Ford F250 7.3 turbo diesel (Aug 98 Production) Have been working with this Scantool for a couple weeks now, by ...
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54 views

Ford mondeo mk3, obd not connecting to computer

I have an Ford mondeo mk3 where the air con isn't working and there is no voltage to the pressure sensors. So I was going to look for error codes. However when I connected the obd it can't connect to ...
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24 views

How to completely eliminate the reverse beep on a 2012 Prius

I followed these instructions (same as described in method 3 of a wikiHow page) to "disable" the reverse beep on my 2012 Prius using a bluetooth OBD2 adapter and a mobile app to connect to it. Type: ...
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OBD2 VW Passat 3.BG build year 2002 - Connection Problems

Since two month I'm owner of a VW Passat 3.BG (Build year 2002, 1.6l, Benzin) and since my last drive the malfunction indicator light is on. Therefore, I thought about using an OBD2-Wifi Adapter to ...
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34 views

Which wires provide keep alive power to the PCM in 2012 Ford Escape?

I have code P1633 - as far as I've check all the fuses in the power distribution (engine fuse) box have continuity - I don't know how to test relays? Next up I want to check where the harness plugs ...
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80 views

ODB key pairing tools allow for easy theft - technical necessity or manufacturing decision

My 2014 Landrover Discovery 4 was stolen when they picked the lock and paired a new key with it using the ODB port. As it is keyless start, that is all they needed to drive it away. I still have both ...
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Ways to maintain the ᴍɪʟ disabled on a 2007 Yaris Volkswagen scandal like…

Well it’s a strange problem after taking the cheapest repair shop of the city where currently anything is not from me yet : engine speed is unstable after 70℃ on gasoline and 55℃ on ʟᴘɢ mode and air ...
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22 views

What’s C3103 error code does means for my car?

I have error code C3103 which reappear randomly every 30km to 50km. But absolutely no description attached beside C means chassis. What does it means and what’s the additional steps to diagnoze ?
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74 views

Where is the injector circuit on a 2007 Toyota Yaris?

I have the PO201 error code which appears randomly every 30Km to 50 Km. The issue sounds possible as the car ran 2000Km with a damaged spark in cylinder 1 before repair. However, they are no circuits ...
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57 views

ELM327 — how to read parameters

I got the ELM327 adapter and downloaded the carscanner app. It really did help understand some problems my 2016 rav4 was having lately. But I'm not sure how to interpret some of the parameters, i.e ...
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77 views

Interfacing with CAN bus

I am looking to write an application in C# and use both ARM based computers and x86 based computers. My question here is when using a J1939 to DB9 cable, do I need a specialized interface for the CAN ...
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40 views

OBD several errors big picture

I have a proton wira 2004 which is essentially a Mitsubishi Colt, I got these errors when I connected an OBD2 device. Could anyone tell me the big picture, what do they mean combined? Thanks in ...
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96 views

Is it possible to produce Fuel Efficiency graph using OBD2 app

Can the Torque app be used to produce a Fuel Efficiency graph for my car, or do I need a specialist for this kind of information ? Generally I want to measure the most fuel efficient extra-urban ...
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203 views

Not receiving multi line response ELM 327

I am sending the following commands to my Hyundai i20 2012 model (OBDLink SX Bluetooth device): AT Z AT H1 AT L1 AT S1 AT AL AT SP6 AT SH 7D1 18 00 FF 00 The response I am getting is 7D9 10 0B 58 03 ...
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1k views

Unexplained Low LTFT on my Mazda cx7 2.3 turbocharged

So, it started when i got CEL with code p0172: system too rich bank1. I took the car to the mazda dealer, they said you need to replace MAF sensor. I agreed and got the new sensor installed. Now CEL ...
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699 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 ...
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69 views

High rpm on neutral but flatting the gas pedal on D doesn't increase the rpm

I am making this question as an update to my previous question . I am not sure if updating that question will draw attention to it or keep it buried in the sea of questions here, if it gets updated ...