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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).

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How could a scan tool disable the car through the DLC?

I recently bought an Innova scan tool. I don't work on cars very often, but I needed a basic scan tool. It worked fine for a month or so, then just stopped connecting to vehicles. I have a 2006 Jeep ...
Ster1's user avatar
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Do any Android cell phone ODBII devices support bi-directional communication? [closed]

I use a BlueDriver for ODBII diagnostics. I recently wrote to them asking if it this device could trigger the ABS Pump bleeding functionality. They wrote back and said, At the moment we perform ...
Evan Carroll's user avatar
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P0430 CEL with A/F Sensor: Sensor or catalytic converter? (Wide Range Sensor 1) [duplicate]

Normally compare Sensor 1 & 2 voltages BUT sensor 1 is A/F type and has steady voltage. NOTE: Using Torque Pro, there is no Sensor 1 Voltage data available (or should I be looking for a Sensor 1 ...
user5070630's user avatar
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OBD2 Codes Keep Changing

1997 Pontiac Sunfire 2.4L I took my car to AutoZone and had them use their scanner. No codes were found. Five minutes down the road the check engine light came on so I stopped at another AutoZone. ...
arock's user avatar
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SK Rapid U041600 + C10A301 + U140600 - link beween trouble codes

Škoda Rapid (2019) 1.0 TSI shows these three trouble codes on OBD diagnostics. Check engine light is glowing, start-stop shows an error, engine performance seems unchanged. Internet search suggests ...
Lukas's user avatar
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My own OBD2 "server"

I need to translate the rs232 stream from my ECU to OBD2 compliant messages. I suppose I will have to put a computer after rs232 connector that will translate (parse and transform) messages so that ...
Khamyl's user avatar
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modifying scantool.exe so i can read Freeze Frame data

I have rebuilt scantool.exe from source and I want to add freeze frame capture. I haven't been able to find details on what the returned packet looks like. descriptions say it is just like mode 1 but ...
bultaco's user avatar
1 vote
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How to detect the "engine on" condition from an OBD2 reader apparatus without using OBD2 polling?

I am planning/designing an OBD2 logger which should detect engine start to begin operation (detecting engine off is trivial since logging via OBD2 is already going on). Since the device should consume ...
FarO's user avatar
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2008 scion tc electrical issue

Hey there I have a 2008 scion tc manual transmission. I’ve ran into the problem of the car reading 12v at idle, 11.5 when lights and heat are on and 10.9 when driving. I checked that the alternator is ...
Jay sanz's user avatar
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2011 Acura RDX alarm random trigger

I have a 2011 Acura RDX and the alarm is going off a random times (usually middle of the night). Based on suggestions online, I have replaced the battery in the two remotes, but it still happens. I ...
TSG's user avatar
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Toyota Hiace 2-17 CPU to OBD2 issue

I have a 2017 Toyota Hiace which is a JDM version imported from Japan. I am trying to connect some extra gauges via OBD2 using a scanner tool such as ELM27 and Scangauge3. I also have a third tool and ...
The Karra's's user avatar
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236 views

What is the maximum number of OBD2 PIDs I can reasonably retrieve at the same time?

I have Mazda 5, 2014 recently I've got OBD2 logger which allows to retrieve large amount (several hundred) of PIDs, including standard ones (SAE) and specific PIDs provided by Mazda Enhanced Add-on; ...
Steve V's user avatar
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155 views

Remove OBD socket from Golf 7

could someone please explain how to remove and replace OBD II socket from Golf 7, ideally with pictures or video? Seems ping in my socket are loose. I have a replacement, but can't get the socket out ...
Dima's user avatar
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Safe to drive ~800km with diesel particulate filter warning?

My 2009 Mini Cooper D (R56) reads "Service" on the small dashboard display, and has the following fault codes (with their meanings that I looked up): P14A5 - Exhaust gas temperature sensor ...
Ferdia McKeogh's user avatar
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50 views

GMC c5500 TopKick

There is a transmission problem and a code on this truck but my scanners cannot read the PCM codes. What scanner should I use to read PCM codes on a GMC c5500 TopKick?
Henry's user avatar
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Remote start and Cool down ford F150 2015: possible by interfacing with ODBii?

I'm trying to set remote starter and cool down (Air conditioning), of my Ford f150 2015... I have done an initial reserarch and it seems possible (I have found a company called Start x https://...
FiNaR's user avatar
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OBDII Scanner showing code after the light is gone

My check engine light turned on. I used my OBDII scanner and got back the codes P0441 and P0455, which is sometimes caused by a loose gas cap. I checked my gas cap and it was indeed loose. I tightened ...
Bretton Haug's user avatar
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112 views

Do ODB-II/EODB/JODB readers for dealers/mechanics show more than consumer readers?

When you go to an auto parts store and buy an ODB-II/EODB/JODB code reader, you will be buying a device that will read vehicle fault codes via a standardized data port. Do vehicle manufacturers sell ...
End Antisemitic Hate's user avatar
5 votes
1 answer
837 views

Should I clear Prius ODB-II codes?

My 2015 Prius had been sitting for several months without being started. The starter battery went flat so when I turned it on, the dash turned on and off in a loop. I charged the starter battery to ...
aaaidan's user avatar
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Can I modify my car so that the OBD II port doesn't supply any power unless the car is turned on?

I have a 2007 Audi A4 and a 2013 VW Beetle. I'm planning to plug in some Veepeak BLE OBD II scanners and hook them up to my home automation server. I want to track a few statistics about our cars and ...
ndbroadbent's user avatar
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77 views

Multiple error codes for both front wheel speed sensors

My ABS and traction control warning lights are on, and I'm getting the following codes: C1041, C1042, C1014, C101F, C1011, C101C. I'd replace the speed sensors but since I'm getting codes for both ...
Jake's user avatar
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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
1 vote
1 answer
67 views

Current draw on an ODB port if left in with engine off and key out

I have a USB socket off my ODB port (I know!). it powers my satnav but my question is this: If I turn off my satnav but leave it plugged in to the USB is there any current draw? Thanks to any wizard ...
Ian Walker's user avatar
2 votes
2 answers
204 views

Why OBD2 reader when cars have digital display?

I can see why separate OBD2 readers were needed before cars had a digital display. But now that they all do, why can't they just display the CEL code on the display instead of having to use a separate ...
amphibient's user avatar
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1 answer
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Can I send a PID using CANBus fornat through an OBD2 bluetooth adapter?

I am interested in knowing if, by sending certain AT commands to the OBD2 Bluettoth adapter (for example the generic ELM 327 Mini) I can "program" this adapter and thus be able to send the ...
José Cohen's user avatar
1 vote
0 answers
26 views

Why different Bluetooth OBD2 v 1.5 adapters (All made in China, they don't have a brand or model) give different responses to the same commands?

After initializing them (ATZ, ATSP0; ATE0 etc etc ) , I guess correctly, the following happens: If, for instance, we send the command 03 some adapters respond 4300... which is correct. While other ...
José Cohen's user avatar
2 votes
1 answer
129 views

Confusing DTC terminology?

I've noticed that many trouble codes use similar wording for the same problem and can't really distinguish between them, for instance. P0105 Manifold Abs.Pressure or Bar.Pressure Voltage supply P0106 ...
Aden's user avatar
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Is there any source of information about car models and brands in which it is possible to know the fuel level through the OBDII PID 2F?

Although OBDII has been mandatory since 1996 for North American vehicles and manufacturers must respect generic fault codes and that OBDII defines a series of PID commands to know the status of many ...
José Cohen's user avatar
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1k views

Trouble shooting abs/esp light on Peugeot 308

I have just replaced the rear discs on a Peugeot 308 hatchback, 2010 model. After this, the abs and esp fault warnings were displayed on the console, and abs/esp lights came on. Plugging in an OBD ...
jamie1989's user avatar
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563 views

Test is inhibited by other DTC?

I'm going through the process of troubleshooting an abs light and DTC code C1326 on a Peugeot 308 1.6l 2010 model. The DTC message I am getting from the scanner reads C1326 - Status: Test is inhibited ...
jamie1989's user avatar
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1 answer
67 views

Mercedes S205 unknown fault code: 562CFF6C

My car machine readed a fault codes with Bosch system from Mercedes W205 (2014) C180 car and they have found an unknown fault code in ABS/ESP system: fault code is: 562CFF2C After deletion of the ...
Dániel Kis's user avatar
1 vote
1 answer
33 views

obd connection issue

I just bought a PA state 03 f250 from a auction. I took it to the garage for inspection and emissions. (I'm told state vehicles do not require emissions.) When they hooked it up for emissions test, it ...
heather price's user avatar
1 vote
1 answer
225 views

How strict is a "drive cycle"?

This answer lists the steps in a GM "drive cycle", for purpose of running certain diagnostic tests, and (?) re-calibrating certain parameters. (In my case, after replacing a heated O2 ...
George's user avatar
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327 views

How to find the typical ranges for sensor values?

I've recently got an OBD scanner and have found some of the live data streams to be very useful, I was monitoring the timing advance value and observed it fluctuating at idle by 10 deg or so the range ...
jamie1989's user avatar
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1 answer
406 views

OBD fault codes vs. pending fault codes

The OBD app that I use, AndrOBD, has three different options to retrieve OBD fault codes: OBD fault codes OBD fault codes (pending) OBD fault codes (permanent) The third option, as I understand it, ...
user149408's user avatar
6 votes
1 answer
781 views

Golf 7 key stolen, which fuse to remove to disable car key reprogramming?

My Golf 7 key was stolen. I have reprogrammed my keys to disable the stolen one. The thief could still reprogram the stolen key as he can open the door using the hidden emergency door lock. Which fuse ...
oxygen's user avatar
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1 answer
28 views

2016 Traverse-OBDII readiness check

My air conditioner does not come on because I have a pin hole in the rear line. Will this affect performing a cycle to get the sensors to read
PPij's user avatar
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2 votes
1 answer
413 views

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 ...
LordVonPineapple's user avatar
1 vote
1 answer
210 views

Check beforehand if will pass emissions test?

How can I check, using an Bluetooth ELM327 OBD-II dongle, whether my car will pass an emissions test?
Geremia's user avatar
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2 votes
1 answer
216 views

Locating OBDI2 port on used vehicle ( Mitsubishi L200 year: 1998 )

Vehicle model: L200 Make: Mitsubishi year: 1998 ( engine ~2004 from swap ) I am located in the carribean, finding solid used vehicles is a challenge actually that an understatement. Vehicles are ...
Invic18's user avatar
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1 vote
1 answer
3k views

Do fault codes get recorded with a date stamp into a log with a history of DTCs?

If it's relevant, I'm asking this question about a 2006 Lexus GS300. A previous post asked if a fault code leaves a time stamp, and the answer was "no." I want to know if fault codes have a ...
DHK's user avatar
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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
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140 views

Vehicle Theft Detected

Looking at engine codes on 2012 Mazda 3, there is something odd: P1260:00-22 theft Detected, Vehicle Immobilized P0138:00-28 O2 (oxygen Sensor) circuit high voltage (bank1, sensor 2) Vehicle starts ...
Chris's user avatar
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-1 votes
1 answer
844 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
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-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
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2k views

P1105 - Differential Pressure Sensor Intake Manifold Pressure Too High (Bank 1) Mini Cooper R56

I am having exact issue as mentioned in this forum Trying to see if this can be answered in SE. I have the following: Mini One 2007 R56 with 130,000 miles on the clock. I been experiencing rough idle ...
user0193's user avatar
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1 vote
1 answer
2k views

Mini Cooper R56 Trouble Starting with (P1105, P111A) codes

My R56 Mini had trouble starting (5-7) cranks to start it and lots of misfires, bad idling etc. I originally posted the problem here and tested for fuel pressure, it is nominal thought. After ...
user0193's user avatar
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56 views

Flashing overdrive light 2002 ford escape

2002 ford escape xlt-flashing overdrive light comes on after short period of driving. Comes on when approaching 50 mph? Or so...how do I fix it?
Scott's user avatar
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1 vote
1 answer
644 views

Help to diagnose A/C failure? Ford Tourneo with Forscan OBD

The A/C in my car doesn't work, before any repair, I try to understand which part in the A/C system is the problem. Here the symptoms: Everything looks fine: no error message, the interior ...
Aurelien's user avatar
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