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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4
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2answers
575 views

Reading OBD2 too fast

I'm writing a software to make a telemetry application for my 2001 VW Golf mk4 reading parameters from OBD2 using an ELM327 compatible cable. I succeeded so far. The problem that I have now, is that ...
3
votes
3answers
3k views

What should I do about PS0128 “Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)” error code?

I have a Mazda 6 and recently purchased the OBD 2 module and saw the check engine light with the PS0128 Error Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature). I ...
3
votes
1answer
575 views

How to interface with obd ii elm327?

Do I have to buy this in order to get all the PIDs and the full instruction set for communicating with the car's obd ii interface via an ELM327? I tried looking for some kind of api for the ELM327 ...
4
votes
3answers
145k views

What is the pin or keycode for ELM327 bluetooth OBDII adapter?

The infamous ELM327 OBDII device came without any paper, just a crappy CD with no document related to the device (only some software and drivers thrown on the CD almost randomly). I tried the ...
3
votes
5answers
4k views

Is it worth getting an OBD2 scanning tool?

I have a Opel Corsa 1999 B type. It is giving me problems now. I have read a little bit about OBD2 scanning tools. But don't know if one could help me, or that I am maybe hoping for too much. I ...
2
votes
0answers
811 views

Mercedes Atego OBD2 live data codes

I have tried to connect an OBD2 ELM327 adapter in Mercedes Atego. Somehow I managed to get it in that OBD2 connector. I can see that my adapter is receiving electricity. These are the PID's that I ...
1
vote
1answer
1k views

1998 Ford Contour P0171 P0174

I have a 1998 Ford Contour that has a check engine light. I checked the codes, and found: P0171 System Too Lean (Bank 1) P0174 System Too Lean (Bank 2) P0401 Insufficient EGR Flow P1131 Lack of ...
1
vote
1answer
416 views

OBD2 protocol in trucks

How can I check if these trucks are OBD2 compatibile? Trucks: Mercedes Atego, type 818 [Daimler 970.21] Man, type 8.113 If they are compatible with this protocol can you tell me where can I find ...
10
votes
3answers
77k views

What iPhone/iPad app works best with ELM327 Bluetooth OBD-II reader?

I've found a number of apps for the iPhone/iPad that connect to ODB-II readers via WiFi, but unfortunately that means that it disables 3G and all the benefits of having a 3G device built into my dash. ...
1
vote
1answer
77 views

Is there a smog abatement program for repairs greater than a certain amount in california?

I just bought a used car, and I'm going to get it smogged soon. Apparently (this is what the mechanic said), I can't get it smogged until 2 "checks" turn on. I think this means that the check engine ...
1
vote
1answer
544 views

CAN-BUS in a SEAT cordoba 99'

Does anyone know if SEAT cordoba (99' model) has CAN-BUS interface? Where can one find this kind of info? Thanks!
2
votes
2answers
1k views

Catalytic converter readiness monitor never sets

I Reset the computer in my 1998 Chevy Astro, but even after driving around for a few days and putting it through the GM drive cycle, the OBDII reader is saying that the CAT monitor is not ready. I ...
5
votes
4answers
2k views

shop can't connect to onboard diagnostic system?

I've recently moved to California and am trying to get my car registered; they require a smog check (which is possibly actually more of an inspection than the name implies?). I went by a very basic ...
9
votes
3answers
780 views

What to know before buying and OBD-II reader

I read the features to look for in an OBD-II reader, but I am curious if getting one is the right move. I'm just planning to get a cheap one, which is proving to be interesting shopping local. What I ...
2
votes
1answer
585 views

Can I easily replace the Throttle Position Sensor on a 1999 Maxima?

My '99 Maxima's Check Engine light came on recently. I whipped out my OBD-II reader, and pulled off two codes. P0325 (Knock Sensor) and P1705 (TPS) Reading online it appears the knock sensor ...
3
votes
3answers
1k views

OBD2 to bluetooth adaptor for 2001 Renault?

I have a 2001 Renault Clio 2 1.6 16V (French made) and I'm looking for a OBD2 to bluetooth adaptor to read computer's parameters. There are MANY available with all price ranges, but I'm not sure what ...
2
votes
3answers
2k views

How can I check if my 1995 Lancer CC GI has OBD-II

As my title say I want to know if my current car that I just purchased has an ODB-II port. I have looked under the steering wheel and I can see what I think to be a OBD-II connector, but am unsure. ...
1
vote
1answer
588 views

OBD/OBD2 port on a 1993 mitsubishi triton MJ

Does anyone know if there is an ODB2 diagnostics port on a 1993 Mitsubishi Triton MJ 4x4 Ute?
4
votes
2answers
682 views

How to view error codes on a speedometer with no OBD reader?

I have a 2000 Dodge Neon and don't have a real OBD reader yet. The other day I started to turn my car on and, before I got to the ignition the speedometer came on with a "p" and a "1684" (the check ...