OBD 1 or OBD 2?

CCO · Sep 12, 2013

I've tried scanning my C4 with an OBD 2 scanner with no success. Is the '94 C4 an OBD 1?

Thanks
Colin.

Keith Tedford · Sep 12, 2013

1994 and 1995 C4s have the OBD-I system but used a 16 pin access connector unlike previous years. This would become standard for the OBD-II system used on 1996 and up.

CaledoniaBrian · Sep 12, 2013

Keith Tedford said:
1994 and 1995 C4s have the OBD-I system but used a 16 pin access connector unlike previous years. This would become standard for the OBD-II system used on 1996 and up.

Keith has it dead on Collin. Your C4 is a 16 pin OBD1 system.

Ranman · Sep 12, 2013

Hey Colin, Brian's paper clip trick is so easy to do. If I can do it anyone can
it only takes 2 minutes and you have your code.

FordPrefect · Sep 12, 2013

I didn't know you were a Star Wars fan

Ranman · Sep 12, 2013

May the force be with you young Skywalker!!

Keep in mind , even though I now know how to get the codes I am still trying to figure out how to resolve them...it is a work in progress but I am enjoying it!

CCO · Sep 12, 2013

Ranman said:
Hey Colin, Brian's paper clip trick is so easy to do. If I can do it anyone can
it only takes 2 minutes and you have your code.

I missed the class on the paperclip trick.....What gives? BTW -- no codes. Just preplanning in case I get one.

and thanks for the responses everyone.

Colin.

Ranman · Sep 12, 2013

Pretty simple, if and when your "service engine soon" light comes on in the car, take a paperclip, form it into the shape of a U and Jump the connectors.
below is a link Brian sent me that depending on the year, it tells you what 2 inlets to jump and how to read the codes.

C4 Corvette Diagnostic Code Recovery Techniques

If the light comes on and you get stuck let me know.

Crusher · Sep 12, 2013

You have ODB1 Colin.... My Autoxray scanner reads both ODB1 and II

Paper clip trick will do. Thats what I used to do back in the day for my 88 IROC before I bought the Auto Xray in the mid 90`s

CCO · Sep 12, 2013

Ranman said:
Pretty simple, if and when your "service engine soon" light comes on in the car, take a paperclip, form it into the shape of a U and Jump the connectors.
below is a link Brian sent me that depending on the year, it tells you what 2 inlets to jump and how to read the codes.

C4 Corvette Diagnostic Code Recovery Techniques

If the light comes on and you get stuck let me know.

Thanks Ranman -- I"ve bookmarked the sight for future use. It does seem easy to recover codes.

C.

CCO · Sep 12, 2013

Crusher said:
You have ODB1 Colin.... My Autoxray scanner reads both ODB1 and II

Paper clip trick will do. Thats what I used to do back in the day for my 88 IROC before I bought the Auto Xray in the mid 90`s

Thanks Peter -- The paper clip method seems easy enough.
I did have an OBD 1 scanner that I sold some years ago since I thought I'd not need it any more. It would have been handy for resetting codes if needed.

I'll look around for another one. There are bound to be some second hand ones out there.

Colin.

OBD 1 or OBD 2?

CCO

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Keith Tedford

CaledoniaBrian

Ranman

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FordPrefect

Ranman

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CCO

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Ranman

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Crusher

CCO

Old Timer

CCO

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