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).

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433 views

Does limiting the number of PIDs on an OBDII Live Scan increase the sampling rate?

I was messing around with the live scan settings on my BlueDriver OBDII scanner and I checked another PID box and got this message: To provide the best quality of data, we recommend logging no more ...
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102 views

adapter for ODB2 device

i have a car: "fiat punto street 2016". I just bought a device from ebay that can give me some informations and errors status, the problems is that the device has an interface OBD2 and it's ...
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872 views

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 ...
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303 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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634 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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3k views

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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1answer
825 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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2answers
43 views

Increase volts at OBD port

My fixd scanner only says low voltage. How can I increase the volts at OBD connection my check engine light is on trying to get code. 1999 GMC Sierra 2500 with a 5.3 litre Vortec engine Scanner ...
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Mk6 Ford Fiesta 1.25 OBII oxygen sensor readings

Plugged my Mk6 Ford Fiesta into Forscan Lite today, and got the following faults below. Was curious to see that both the 021 and 022 flatline at near zero volts at 2000 rpm. That's not normal is it? ...
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45 views

What is “transmission slip ratio” and is it normal to have anything other than 1.0?

I got a 5.4 Ford econoline 1998 edition. I got me a odb2 code readin app with the bluetooth on it... and I also paid extra to unlock the premium Ford specific data... all kinds of stuff in there. In ...
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30 views

Which DLC terminals are known as DLC bias terminals (or should it be DLC Bus terminals)

This is related to Test 5 of this question: OBD II Scanner refuses to communicate with the vehicle! Funny that I should be asking this but then .....it happens Unfortunately, I cannot remember. I'd ...
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22 OBD codes 2008 Chevy Tahoe :D Help

I just inherited a 2008 Chevy Tahoe LS 5.3L V8 with 239,730 miles. When scanning for codes it listed about 22 codes. I know the obvious thig to do is to take it into a mechanic but i want to see if ...
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21 views

Volkswagen GTI OBDII Readiness

I have a 2015 Volkswagen GTI SE (2.0T) which is (a little over) due for an emissions test. A few weeks ago I had some rear-end bumper damage repaired, and while in the shop they cleared the trouble ...
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1answer
65 views

Cannot connect OBD devices to ECU on Toyota vehicles

I have two ODB devices. One is ELM327 Wifi OBD2 and the other one is OBDLink LX Bluetooth. My problem is that none of the OBDs connect to Toyota cars. More specifically: I have tested the two OBD ...
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70 views

Suzuki Swift Sport and ODBii

I recently purchased a new Suzuki Swift Sport, and wanted to use the Torque App for some checking ( mostly enjoy parameter reading, graphs.... ) but my wifi adapter was unable to communicate with the ...
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1answer
362 views

Can one set idle rpm through a commercial OBD diagnostic tool?

I'm talking about "permanently" setting the engine's ECU to maintain an idle RPM of my choice, say, 1200 or 1500? (by "permanently", I mean something that would be maintained after power cycling) If ...
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105 views

Mazda 3 OBD - CAN codes(ELM327) Programming

I have Mazda 3 (2005) and i read a while ago that i can use ELM327 (OBD2) to automate many tasks like. Lock & Unlock my cars doors Check whether my car doors are locked Check A/C Temperature ( I ...
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42 views

Can I read PID from other protocol?

My car (Renault Megane II) sharing PIDs through KWP protocol but also sharing other data (more advanced) through CAN. Some of data which I want to read is not available through KWP (PID). Is there a ...
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1answer
124 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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20 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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23 views

Check Engine missing fault code: Missing really or not readable by odb reader?

I recently had a serious engine problem which caused the "check engine" light to go on and the engine can now not even be started. I checked the ODB dtc / fault codes in 2 ways: An undocumented "...
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21 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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252 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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128 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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41 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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52 views

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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42 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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218 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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100 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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51 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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106 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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1answer
238 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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3answers
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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732 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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1answer
127 views

Feelin' a misfire but ain't showng no misfire in the computer

I swears when I turn on my van just sitting there I feel a misfire more often than any good person should. In my opinion, I shouldn't be feeling any weird shakin or nothin. When she's been driven a ...
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1answer
73 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 ...

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