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On-Board Diagnostics, or OBD, in an automotive context, is a generic term referring to a vehicle's self-diagnostic and reporting capability. OBD systems give the vehicle owner or a repair technician access to state of health information for various vehicle sub-systems. The amount of diagnostic information available via OBD has varied widely since the introduction in the early 1980's of on-board vehicle computers, which made OBD possible. Early instances of OBD would simply illuminate a malfunction indicator light, or MIL, if a problem were detected-but would not provide any information as to the nature of the problem. Modern OBD implementations use a standardized fast digital communications port to provide myriad realtime data in addition to a standardized series of diagnostic trouble codes, or DTCs, which allow one to rapidly identify and remedy malfunctions within the vehicle. See the link added "What is OBD" for more detail

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โˆ™ 2007-09-01 03:26:33
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Q: How does obd work?
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Related questions

Need a obd adapter for 1992 Lexus es 300?

92 Lexus is OBD 1. There is a plug for Lexus OBD 1, and will not work with an OBD2 scanner.

Will a automotive code scanner obd-2 work on a 1997 Pontiac sunfire se?

Yes a OBD 2 scanner/reader will work on your car

Will a obd 2 code reader work on a1994 land rover discovery?

Your vehicle is too old for the OBD 2 reader to work on it. Not sure what system would work as manufacturers used their own dedicated systems before OBD became the industry standard. Steve

Can the ecm for a 1995 work for a 1998 Jeep Wrangler?

No. 1995 was OBD-I controls, SBEC. 1998 was OBD-II controls, JTEC.

How to check obd 2 codes with paper clip?

That does not work.

Can you use an obd-2 reader on a 05 Dakota?

Yes you can OBD 2 reader/scanner are the only thing that will work to get codes

What obd does a 1989 camero have?

It has obd 1It has obd 1

Where is the OBD port on a 2001 Toyota Corolla and what type of OBD will work with this vehicle?

The 2001 Toyota Corolla uses a OBD 2 reader and it located on lower driver side of dash next to hood release

Will OBD II mpg readout work on a 91 sr5 pickup?


Will an obd2 work on a 1994 dodge caravan?

No, 1994 is OBD 1

Does 1988 olds toronado have obd 2?

No, it is obd 1.No, it is obd 1.

Will a obd 2 scanner work on a 2001 civic?

Yes it will or a OBD2 reader

How do you reset the computer on a 1999 gmc envoy?

hook OBD II scanner up and clear codes. Disconnecting battery doesn't always work on OBD II

Does the 1990 Chevy s10 use obd or obd 2 port?

Should be OBD I, OBD II is 1996 and newer

Is a 2000 Chevrolet Camero OBD 1 or OBD 2?

It is OBD 2

Is the 1990 dodge ram obd 1 or obd 2?


Does 95 BMW 325i have obd 1 or obd 2?

obd 2

Can you change your 1996 geo metro 3cyl obd ii computer for a more fuel efficient 1995 obd 1 model without making any other changes will you gain back the fuel milage lost with the obd ii?

NEGATIVE: Your 96 Geo has all the sensors and switches for OBD II, regressing back to a 95 computer would not work. The OBD I computer would not be able to "talk" to the OBD II sensors and switches. Sidenote: It would not pass smog.

What is the obd2?

OBD is the acronym for "On Board Diagnostic". OBD-II (OBD-2) started in 1996. Vehicles built in 1995 and before are OBD-I (OBD-1). I hope this helps, good luck.

Will as obd II Read obd I codes?

No, it will not.

Is 1994 Dodge Dakota 3.9 a obd2?

No it is OBD 1No it is OBD 1

What code reader works on a 86 Chevy s10?

A code reader that will work on the OBD I system.

What obd is a 1990 Acura Integra?


What is OBD system in cars?

OBD = On Board Diagnostics.

Where is obd connector port on a 1993 jeep grand cherokee?

It is OBD I, not OBD II, the connector is under the hood.