Code 25 and 74 on a 91???
Thread Starter
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Code 25 and 74 on a 91???
On my drive back from the ClubVette Christmas party, the SES light came on and stayed for approx 10 minutes then went out. I was on an interstate highway, running at 65 to 70 mph. When I checked the codes this morning, they showed as history. Two questions:
1. Code 25 is high intake air temp. Outside temp was 37*. Is that possible?
2. What is code 74? I can find no reference to it.
Any advice appreciated.
1. Code 25 is high intake air temp. Outside temp was 37*. Is that possible?
2. What is code 74? I can find no reference to it.
Any advice appreciated.
Team Owner
Joined: Jan 2003
Posts: 20,322
Likes: 248
From: Summerland B.C. Canada
Re: Code 25 and 74 on a 91??? (Steel Blue 91)
Code 25=Put ohm meter on sensor, Must NOT read 0 ohms or infinite ohms.
Check wiring to IAT
Code 74=high alcohol content, Sleep it off :D
:cheers:
Check wiring to IAT
Code 74=high alcohol content, Sleep it off :D
:cheers:
Safety Car
Joined: Feb 2002
Posts: 4,212
Likes: 10
From: Sun City West Az
Re: Code 25 and 74 on a 91??? (AGENT 86)
You didn't say if there was any noticable change in performance...engine speed, missing etc. Was it just the SES llght ? The fact it went out, indicates a soft code. It could be the sensor went out of range for a few but returned to its' normal. If there are no other symptoms, I'd clear the codes and see if it returns.
Thread Starter
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: Code 25 and 74 on a 91??? (ittlfly)
No noted change in performance when the SES light came on. I cleared the codes yesterday and have had no returns. Just curious as to the code 74.
