C5man_5.7

I pulled the codes from the DIC for the first time since Ive owned the car and I found way more codes than I thought would be on there. The codes were:

10 PCM P0442 H

40 BCM B0605 H not sure what this one meant

58 SDM B0432 H not sure
B1001 H not sure

99 HVAC B0441 H C
B0446 H C

BO-RFA U1096 H
U1064 H
U1016 H
U2110 H C

I know what the H and C means but what does it mean when they're together. The BO-RFA codes worried me they were loss of communication with IPC BCM PCM, what code have caused those? Could you give me some insight on these codes, and also the DIC tells me to service tire monitor system what else can go wrong.

Bill Curlee

The codes accumulate over time. Get a fresh set of codes by clearing ALL the DTC and monitoring the DTCs to see what comes back and then post those.


BC

C5man_5.7

alright will do. To reset I just hit reset after it goes throughall of the codes?

byronhunter

Scroll to each module, then push and hold reset till it beeps.

dgrant3830

You can either reset majaor sections of the codes or each code individually but pushing the reset at the end will not delete them.

Bill Curlee

Late Xmas present:

READING YOUR Engine Diagnostic Codes (DTCs)

The Diagnostic Display Mode is entered with the following procedure:
1) Turn on the ignition but don't start the engine.
2) Press the RESET button to turn off any warning messages. (i.e. door open, trunk open etc…)
3) Press and hold OPTIONS
4) While holding OPTIONS, press FUEL four times within a 10-second period.

Initially, on-board diagnostics go into an Automatic Mode which shows diagnostic codes in a pre-set sequence: PCM - TCS - RTD - BCM - IPC - RADIO - HVAC - LDCM - RDCM - SCM - RFA. All codes will be displayed for each. ( i.e. PCM = 4 codes)
If none are present in a given module, you will see No More Codes on the display.
There are two kinds of diagnostic codes, Current and History designated with a letter suffix, C or ;H. A current code indicates a malfunction is present in the module displaying data. A history code indicates a problem existed sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it's potential evidence of a previous problem, now resolved, that was not removed by clearing the codes.
More likely it's an indication of an intermittent malfunction.
Intermittent codes are the most challenging of the diagnostics. An intermittent code may have happened once, may have happened more than once but is inconsistent or may be happening on a regular basis but not at the time the codes are displayed. History codes can also be caused by a current malfunction in a system that is not operating at the time codes are displayed. An example is the rear window defogger which doesn't operate until the Body Control Module detects engine rpm. For history codes set by a module that does not operate with the key on and engine off, a special diagnostic tool called a Scan Tester is necessary to properly diagnose the malfunction.
Once the system has displayed all modules, it goes into the manual mode which allows selection of each module using combinations of Driver Information Center buttons. Manual mode can also be entered during the automatic sequence by pressing any button except E/M. Once the display shows Manual Diagnostics, select a module by pressing the OPTIONS button to go forward or the TRIP button to go back. Once a module is selected, a code is displayed, and if more than one are present;
press GAGES to go forward or FUEL to go back.
To exit the diagnostic mode at any time, press E/M. If you want to erase codes in a given module, press RESET
To reset the codes once in manual mode, press and hold RESET until it displays NO CODES Press OPTIONS to go to the next module. Repeat the steps until you have reset the codes in all the computer modules.
NOTE!! Only reset the codes IF you want to - it is NOT necessary to do this. Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory. If you clear the code/s, and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles.
Once you have the codes, the next question is: What to do with the information?
First, consult the factory service manual. Any serious C5 Do-It-Yourself owner should invest in the Corvette Service Manual of the appropriate model year. The Service Manual is really a requirement if you want to understand and work on your C5.

Here is very good site of DTC definitions:


http://www.gearchatter.com


Make sure to include the H or C suffix!!

C5man_5.7

thanks for the help, none of the codes have come back up since

Z0ra6

So what is the required driving cycle? I cleared a code thrown from an intake kit. I have driven the car 10 hours straight w/o any codes coming back. Does that mean the car would pass emissions now?

"If you clear the code/s, and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles."