Pulled Codes and only get H codes
Thread Starter
Racer
Joined: Aug 2006
Posts: 415
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From: Utah
Pulled Codes and only get H codes
I pulled codes using the procedure documented in a fantastic link for 92 and 93 Vettes recommended by casethecorvetteman.
http://forums.corvetteforum.com/show....php?t=1620513
For module 1.1 (CCM Codes) I got H72 and H74. (LCD Dimming Open & LED Display Open). For module 4.1 (ECM codes) I got H32 (EGR valve and/or circuit). I did not get any C12 codes, which I thought I was supposed to get.
My questions are:
1. Do I need to worry about H (history) codes. When does a C code become an H code? The battery has not been disconnected since last fall, when I replaced the ECM.
2. Do I need to worry about not getting any C12 codes?
This car has had it's CD player replaced with an aftermarket (Alpine) system and that has had some affect on the CCM. The SYS light and SECURITY light both come on periodically. Other than that the car runs fantastic!!
I appreciate the great information I get from this forum.
http://forums.corvetteforum.com/show....php?t=1620513
For module 1.1 (CCM Codes) I got H72 and H74. (LCD Dimming Open & LED Display Open). For module 4.1 (ECM codes) I got H32 (EGR valve and/or circuit). I did not get any C12 codes, which I thought I was supposed to get.
My questions are:
1. Do I need to worry about H (history) codes. When does a C code become an H code? The battery has not been disconnected since last fall, when I replaced the ECM.
2. Do I need to worry about not getting any C12 codes?
This car has had it's CD player replaced with an aftermarket (Alpine) system and that has had some affect on the CCM. The SYS light and SECURITY light both come on periodically. Other than that the car runs fantastic!!
I appreciate the great information I get from this forum.
