How to pull ODB1 codes
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Burning Brakes
Joined: Oct 2000
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From: Palatine
How to pull ODB1 codes
I searched archives and google. Its amazing how simple information is so hard to find lately. Just broken links to other info sites.... end rant. What pins do I jump, and what do the codes = to. ODB 1 for 94
Race Director
Joined: Sep 2000
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From: The Top of Utah
Originally Posted by Blues77
What pins do I jump, and what do the codes = to. ODB 1 for 94
RACE ON!!!
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
These codes flash... <blink> short pause <blink><blink> = 12, it will be repeated 3 times, then the code, for example, 52 would be <blink><blink><blink><blink><blink> short pause <blink> <blink> long pause, repeat code.
That will repeat 5 times.
then code 12 will appear, and then the next code. If there is only 1 stored code, then it will appear next.
As CFI-EFI said, if you have a code, it does not mean the sensor is the problem. It could be any number of other issues. For example, you get an EGR code. That codes presentation is very important. If it comes on IMMEDIATELY after starting and stays on, the problem is with the EGR control, if it takes 20~30 minutes of driving, then it's the valve itself. You see, if it fires immediately, that means the control failed the self test.
subtle, I know...
That will repeat 5 times.
then code 12 will appear, and then the next code. If there is only 1 stored code, then it will appear next.
As CFI-EFI said, if you have a code, it does not mean the sensor is the problem. It could be any number of other issues. For example, you get an EGR code. That codes presentation is very important. If it comes on IMMEDIATELY after starting and stays on, the problem is with the EGR control, if it takes 20~30 minutes of driving, then it's the valve itself. You see, if it fires immediately, that means the control failed the self test.
subtle, I know...
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by bogus
That will repeat 5 times.
then code 12 will appear, and then the next code. If there is only 1 stored code, then it will appear next.
then code 12 will appear, and then the next code. If there is only 1 stored code, then it will appear next.
RACE ON!!!
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by CFI-EFI
Is it 5 times in later cars? Mine flashes the "12" three times. Then the first fault code, 3 times. After the first fault code has flashed 3 times, it moves on to the second fault code, if any. Et cetera. The "12" doesn't reappear until all the fault codes have been displayed, signaling "the end".
RACE ON!!!
RACE ON!!!
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
Originally Posted by Blues77
duh its in my haynes, thanks guys..
me
edit: my LTPWS is what flashes. i only get the 12 once in the beg. then each code three times, then the 12 once at the end.
me
edit: my LTPWS is what flashes. i only get the 12 once in the beg. then each code three times, then the 12 once at the end.
Before you go any farther, get the Helms Manual... You won't be able to fix jack with the Haynes. These cars are SO complex...
Melting Slicks
Joined: Feb 1999
Posts: 3,261
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From: sonoma ca
If you have a 16 pin DLC?.....jumper pins 12 & 4. It shud display on the speedo. Go to c4vettes.com for more info. Select Fact Sheets & then Trouble code recovery.
Last edited by Red Dwarf; Sep 26, 2004 at 07:16 PM.
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Originally Posted by Blues77
I searched archives and google. Its amazing how simple information is so hard to find lately. Just broken links to other info sites.... end rant. What pins do I jump, and what do the codes = to. ODB 1 for 94
Just a thought!EZ Link costs about $200 and besides pulling codes allows you to read real time data too!
I was having problems last fall and winter on my 88! Was running awfull but not throwing any codes
EZ link let me read the values to and from ECM and I isolated the problems.
Repairs/replacements were inexpensive and I easily recovered the cost of the EZ link with the money I saved from not just buying expensive parts and hoping they solved the problem!
seeya
Jack
Team Owner
Joined: Aug 2000
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From: San Pedro CA
Originally Posted by Red Dwarf
If you have a 16 pin DLC?.....jumper pins 12 & 4. It shud display on the speedo. Go to c4vettes.com for more info. Select Fact Sheets & then Trouble code recovery.
Melting Slicks
Joined: Feb 1999
Posts: 3,261
Likes: 9
From: sonoma ca
Originally Posted by bogus
I tried to get to www.c4vettes.com today, the link didn't work. I hope they are ok!
