Sometimes I think the engineers do this as some kind of joke but that's what the manual says about some of the codes.
Check Engine Light...No codes?
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Check Engine Light...No codes?
Got the check engine light last week. Pulled the codes today but all I find are History codes "H" codes. Shouldn't I be finding a code that ends with the "C" for the current code? I'm confused. Can anyone help a novice out.
Thanks in advance.
D_BlueVette
Thanks in advance.
D_BlueVette
Race Director
Joined: Sep 2004
Posts: 17,786
Likes: 4
From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
If the CEL comes on and goes out, then yes, it would a history code. Was the CEL steady on, when you pulled the code?
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by D_BlueVette
Got the check engine light last week. Pulled the codes today but all I find are History codes "H" codes. Shouldn't I be finding a code that ends with the "C" for the current code? I'm confused. Can anyone help a novice out....
Pulling the codes is good practice. H codes came reflect transitory events. The Cs are of more concern.
Temporary commo issues are the most common when a processor doesn't receive a report from a sensor at the expected interval.
Another is a lean code if you have an aftermarket intake.
In the FAQ sticky is a list of the codes and their meanings. Suggest you look them up and post questions if any are unclear.
Ranger
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Originally Posted by screw991le
If the CEL comes on and goes out, then yes, it would a history code. Was the CEL steady on, when you pulled the code?
Yes, the CEL was steady on when I pulled the codes. The CEL has been steady on for a week now?
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by D_BlueVette
Yes, the CEL was steady on when I pulled the codes. The CEL has been steady on for a week now?
Ranger
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Race Director
Joined: Jul 2001
Posts: 11,697
Likes: 48
Originally Posted by dougbfresh
The CEL light can go on (I think) if one of the gauges goes into the danger zone also-what are your gauges saying?? This may/my NOT trigger a stored code.
Make sure the gas cap is on tight....it happened to me.
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 231
From: SoCal
Originally Posted by dougbfresh
The CEL light can go on (I think) if one of the gauges goes into the danger zone also-what are your gauges saying?? This may/my NOT trigger a stored code.
At track when I get CEL for getting temps too high there is NO code !!
DH
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Originally Posted by D_BlueVette
All other gauges are giving good readings. give me a few minutes and I'll post some codes.
These are the only codes I found. Would any of these give me a check engine light since they are all History codes?
10-PCM P1870 H
60-IPC B0521 H
U1160 H
B0-RFA U1096 H
U 1064 H
U1016 H
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Originally Posted by D_BlueVette
These are the only codes I found. Would any of these give me a check engine light since they are all History codes?
10-PCM P1870 H
60-IPC B0521 H
U1160 H
B0-RFA U1096 H
U 1064 H
U1016 H
10-PCM P1870 H
60-IPC B0521 H
U1160 H
B0-RFA U1096 H
U 1064 H
U1016 H
TTT
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
If you shut down the motor and then turn the key to pull codes, they will be history codes. If you pull codes but don't shut down the motor they are likely "C" codes. Found that out last night with my rich bank 1 code I am trying to figure out.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by D_BlueVette
These are the only codes I found. Would any of these give me a check engine light since they are all History codes?
10-PCM P1870 H
60-IPC B0521 H
U1160 H
B0-RFA U1096 H
U 1064 H
U1016 H
10-PCM P1870 H
60-IPC B0521 H
U1160 H
B0-RFA U1096 H
U 1064 H
U1016 H
P1870 H....Transmission Component Slipping
60-IPC (Instrument Panel Cluster)
B0521 H....Tachometer Signal Circuit Malfunction
U1160 H....Loss of Communications with LDCM
B0-RFA
U1096 H....Loss of Communications with IPC
U1064 H....Loss of Communications with BCM
U1016 H....Loss of Communications with PCM
None of those would concern me except P1870, which I'll not seen before and can't help with. I would clear all the codes and then go for a drive. Then recheck. Commo codes are usually based on transitory events.
Here is a useful site to bookmark:
2002 Chevrolet Corvette OBD-II Codes
Ranger
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 231
From: SoCal
Originally Posted by D_BlueVette
TTT
DH
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Originally Posted by Dirty Howie
The 1870 transmission slipping is cause you have an A4. It may be going out. Do you have a custom tune? Are you getting hard shifts?? What are your tranny temps???
DH
DH
I do not have a custom tune and I'll have to check my tranny temps, pretty sure its not running too hot, but I will check.
Thanks guys.
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 231
From: SoCal
Originally Posted by D_BlueVette
I noticed some hard shifts about four or five different times the other day while cruising around town. Didn't really think about it much because the hard shifting stopped and hasn't been back since.
I do not have a custom tune and I'll have to check my tranny temps, pretty sure its not running too hot, but I will check.
Thanks guys.
I do not have a custom tune and I'll have to check my tranny temps, pretty sure its not running too hot, but I will check.
Thanks guys.
It slips in 3rd and 4th .... barely got home !
......... and NO CODES !!!!
DH
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 1,074
Likes: 0
From: Texas
Originally Posted by Dirty Howie
Well my tranny just died today
It slips in 3rd and 4th .... barely got home !
......... and NO CODES !!!!
DH
It slips in 3rd and 4th .... barely got home !
......... and NO CODES !!!!
DH
I hate to hear that about your tranny
. My tranny temp is running about 140. I have no idea what normal running temp is. What do you all think? 
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 231
From: SoCal
Originally Posted by D_BlueVette
I hate to hear that about your tranny . My tranny temp is running about 140. I have no idea what normal running temp is. What do you all think?
. My tranny temp is running about 140. I have no idea what normal running temp is. What do you all think? DH