I upraded my injectors yesterday to 28 lb. units given to me by a friend (BIG thanks to Bill Reid at Xtreme for the instructions :thumbs: ). After driving the car for a little over 100 miles, everything seemed great - the car hadn't idled or driven this smoothly since we installed the Katech stage II H/C back in October.

Well, we had a track day today, and, of course, as soon as I got in line to tech, the Service Engine Soon light came on. :mad I disconnected the battery for about 10 min., however, this didn't clear the light. :nonod:

Next, I checked the DIC codes and got the following:

PO300H
B2583H
B0026H
U1096H
U1064H
U1016H
C2100H
C2110H....

So, I cleared all of the codes, turned off the car, and turned it back on. Much to my dismay, the SES light still was lit (all codes cleared). :confused:

Can anyone provide some help as to how to clear the light now?
What does code B0026 stand for?

I researched the rest of the codes and they involve a misfire and loss of communication with the IPC/PCM/DCM, as well as tire sensor monitor and turn signal monitor malfunctions. I realize that these are all historical codes, but how serious are they? Are they typical for a H/C car that has not yet had computer tuning?

Thanks for listening. As always, all input appreciated. :flag

 

Try this site. It has a bunch of C5 trouble codes on it. Hope this helps a little. http://www.corvetteweb.com/

 

General Motors B0026 Driver Frontal Deployment Loop Open
Whatever that means?

 

Thanks guys.

The SES light reset this morning,but came back on again after 30 miles. Now it's giving me P0440 H,C. I can't find this code either, but I'm getting sick of this sh**. I guess I need some cash for tuning, huh? Any code gurus willing to chime in? :flag

 

P0440 Evaporative Emission (EVAP) System . I believe H is history, C is current.
http://fixedroofcoupe.com/aboutdownl...iccodes02.html has the codes.

 

The SIR system’s SDM performs tests when the ignition is first turned on; B0026 signifies that the driver air bag circuit is open. The SDM will turn on the AIR BAG light. Did you ever disconnect the air bag connector (yellow connector) at the bottom of the steering column, with the ignition On? If the light is off, the system should be ok, but you might want to check the system with a scan tool for safety. I had the AIR BAG light turn on when driving through Louisville one night, called Onstar, they ran a check for codes, and explained it was a passenger air bag problem; get it fixed immediately. I finally talked the guy into giving me the code, and the description. I kicked the knee bolster and the light went out. When I got home, I checked the connector, found a terminal not fully seated, and fixed the problem in about five minutes. (Grand Prix had both driver and passenger air bag connectors right above the driver’s knee bolster.) The weakest link in any electrical system is the connectors.

P0440 is informing you that the EVAP system cannot develop a vacuum greater than a predetermined value. Without this vacuum, the PCM thinks the fuel tank is leaking hydrocarbons (fuel vapors). The usual cause of this is a bad seal on the fuel cap, or the fuel cap not on correctly. If this code keeps appearing put some non-silicone grease on the fuel tank o-ring, and clear the code. (Non-silicone is recommended since silicone vapors can destroy O2 sensors; takes a lot, but why take the gamble.) Then drive for a while. This code can sometimes take up to 100 miles to set. If it sets again, you can go to the dealer, or try a new cap. There could be a hole in one of the fuel fill lines.

 

Thanks for the info. I did have the airbag replaced last month after the horn got stuck again. I guess that might have been part of the cause. I'm not sure about the EVAP error, but I'll keep an eye out. Thanks again to everyone. :flag

 

Actually, I have a follow-up question regarding the EVAP code. Could this have come about because I changed the fuel injectors? I checked all of my connections and none are leaking, so what should I do next? :confused:

 

Another day, another code....this time it's P0300H - another misfire. Are these real? Are they dangerous? Code Guys???? :confused:

 

EVAP code: Don't believe it can be set by larger injectors since it is determining if the fuel tank is leaking fuel vapors by applying vacuum to the tank and monitoring a pressure sensor reading. Again, if you lubricate the fuel fill cap, and the code never comes back, my guess would be the cap. Dealers are hit with this code daily, and the main reason is the cap is not tightened past the third click.

P0300 can be caused by many things. Running out of fuel can cause sufficient misfire and same with a restrictive fuel filter. Excessive vibration including rough roads and even variable thickness in the rotor. (Yes, sounds farfetched, but these things can cause a misfire code.)

Sorry I can't help more, but it is rough diagnosing electronic controls without having the vehicle and using a Scan Tool. Personally, for the EVAP code, I would wait to see if it comes back after lubricating the fuel fill cap. The misfire code, if it was my vehicle, I would wait too; however, if you have a misfire problem, a bad misfire can damage the catalytic converter(s), and that can be an expensive repair.
:banghead:

 

Thanks, man.

 

I believe the PO300 code can also be caused by some idiot hitting his nitros at the line causing a big boom and causing the guy next to him on the line (you) to sh.. in your pants! :cheers:


[Modified by BLU PIL, 11:07 PM 2/13/2003]