Service engine light code patern... I need the error code??

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May 23, 2004 | 07:55 PM

TheStef

Thread Starter

Burning Brakes

Joined: Jun 2003

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Service engine light code patern... I need the error code??

Hi guys,

I just did an error code test on my 88 Vette, with the Pin connect A and B with the paper clip, but I need to know the error codes for these two flashing paterns.

Unfortunaly I do not have the service manual to find out.

First code is, (Flash, Flash, Flash, Pause, Flash, Flash, Flash)
Secound code is, (Flash, Pause, Flash, Flash)

Thanks guys! :cheers:

May 23, 2004 | 08:09 PM

MPforUSMC

Instructor

Joined: Oct 2003

Posts: 232

Likes: 0

From: Memphis Tn

Re: Service engine light code patern... I need the error code?? (TheStef)

Code 33: Manifold Absolute Pressure Sensor (MAP)-signal voltage out of range, high or Mass Air Flow (MAF) sensor-signal voltage out of range, probably high.

Code 12: No Engine RPM reference pulses-System Normal

[Modified by MPforUSMC, 1:10 AM 5/24/2004]

May 23, 2004 | 08:11 PM

TheStef

Thread Starter

Burning Brakes

Joined: Jun 2003

Posts: 1,229

Likes: 1

Re: Service engine light code patern... I need the error code?? (MPforUSMC)

Thank you! :thumbs:

May 23, 2004 | 08:11 PM

vsocks

Racer

Joined: Jan 2004

Posts: 261

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From: Belgium WI

Re: Service engine light code patern... I need the error code?? (TheStef)

Where is there a complete ECM code listing?
I have codes 24 and 45, what are they?

May 23, 2004 | 08:18 PM

TheStef

Thread Starter

Burning Brakes

Joined: Jun 2003

Posts: 1,229

Likes: 1

Re: Service engine light code patern... I need the error code?? (TheStef)

Just want to make certain... did you get that error code 33 from an 88 Service manual? I read that there are differences depending on the year.

Thanks

May 23, 2004 | 08:19 PM

TheStef

Thread Starter

Burning Brakes

Joined: Jun 2003

Posts: 1,229

Likes: 1

Re: Service engine light code patern... I need the error code?? (TheStef)

Here's the web site
http://www.c4vettes.com/ecm.htm#33

May 23, 2004 | 08:21 PM

MPforUSMC

Instructor

Joined: Oct 2003

Posts: 232

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From: Memphis Tn

Re: Service engine light code patern... I need the error code?? (vsocks)

VSOCKS, I bought a code reader for 30 bucks at Checkers and it has a code booklet. Also, its in the Chilton repair book. And of all else fails, you can surely find it using the search button on CF. :flag

Code 24: Vehicle Speed Sensor Cicuit
Code 45: Oxygen Sensorleft side on 2 sensor system rich exhausted indicated

Quote:

Where is there a complete ECM code listing?
I have codes 24 and 45, what are they?

May 23, 2004 | 08:42 PM

65Z01

Team Owner

Joined: Dec 2000

Posts: 90,675

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From: SE NY

Cruise-In II Veteran

Re: Service engine light code patern... I need the error code?? (TheStef)

The first is a code 33 == MAF reading high;
the second is code 12==end of trouble codes.

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May 23, 2004 | 08:50 PM

1985 Corvette

Le Mans Master

Joined: May 2004

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Re: Service engine light code patern... I need the error code?? (TheStef)

Quote:

Just want to make certain... did you get that error code 33 from an 88 Service manual? I read that there are differences depending on the year.

Thanks

The trouble code 33 remained the same for models 1985 through 1989. I've heard that includes the 1990 model year as well, but I thought 1990 was the year MAP was introduced.