The Check engine light came on this afternoon and I have not been able to get it to shut off. Have checked the oil and anti-freeze and they are okay. All electrical connections under the hood appear to be okay. There is no message in the DIC and I have no idea what the problem may be. Any help will be appreciated. Thanks,

Gene

 

You need to pull the codes, read here for the how to >>> https://www.corvetteforum.com/techti...D=26&TopicID=1

 

Thanks for the help. Will work on this tomorrow afternoon.

Gene

 

Here is another web site that is wonderful and has other C5 stuff! Pull the DTC's and post your results!!


This is the absolute best C5 Diagnostic Trouble Code (DTC) web site!!!

http://www.corvettedoctor.com/Code_Main.html
http://www.corvettedoctor.com/index.html


Go to “technical data base” and then to “Corvette ECM Computer Codes”. Then select your year car. Read the instructions and then scroll down to the "READ MORE" window to view the code definitions.\

Here is another very good site:

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix!!

Sound effects are cool too! 

 

Thanks for your help. Will have to save these sites for future reference.I am anxious to see what codes are in the systems
as the car doesn't have that many miles. 2002 Z06 that just turned 18,000 miles. Will post results. Again, thanks to the both of you for your help. Sound effects that I enjoy.

Gene:

 

My check engine light came on so I pulled the codes. The only active codes delt with the engine running lean. Turned out the intake had come loose from the mass air flow sensor, put it back together, turned off the light and all is well. Point is until you read the codes it could be about anything.

 

For the link. The wifes Check engine light came on the other day, and with the link you posted, I was able to clear the codes.

The code was P0410 HC; Secondary air injection (air) system.
Not sure what that is/means, so it's off to the manual I go!


~Ray

 

Pulled the codes a few minutes ago. They read as follows:
10 PCNI -P1416 H C
A0 LDCM - B2282 H, B-2284 H, U-1064 H, U-1016 H, U-1096 H,U-1255 H
A1 RDCM - B-2283 H, B-2285 H, U-1255 H, U-1064 H, U-1016 H, U-1096 H
I'm guessing that the PCM code triggered this due to it having the "C". I would think that I could reset all the "H" designations but am not sure about the PCM code. Hope I have this right.

Gene

 

10 PCNI -P1416 H C that is your current code thats the one giving u the check engine light icon, this is an air system bank 2 air system bank 2 this is used to lower tailpipe emissions on start up the pcm monitors the Ho2s voltages to diagnose the air system.During the air test ,the pcm activates the air pump during closed loop operation.Do u have a scan tool? Not that i am smart lol i just have the 3 fat manuals in front of me

 

fsuforever, no, I don't have the scan tool. Will check with my son-in-law and see if he does. Appreciate your help.
Ray, that appears to be the same problem I have:Secondary air injection (AIR) System. Thanks for the help.
jrose, thanks for the reply.

Gene

 

Now that you wrote the codes down you can go in there and reset them to turn off the CE light. Then see what codes come back.

 

Most likely a stuck AIR Check valve. If your interesred, I have a method that you can use to try to clean the valve. Might save you a few bucks and a lot of time.

with Steven T
Yep,,,If you have the codes written down, CLEAR THEM! Most of the time, that will take care of it.

BC

 

StephenT and Bill Curlee:thanks for you help with this problem. Reset the codes this afternoon and so far nothing has re-appeared. However, I haven't driven the car. Just started it at different times.Will see what happens when I drive it. BC, if the code comes back, I will contact you for the info on cleaning the valve. Again, thanks to all for the help.

Gene

 

hi bill can you tell me how to clean the check valve on a 02z06 getting code 1416 2 times now do i have to pull intake or ? HELP

 

Here's a TTT for you. Hopefully Bill will see this. Might be easier to pm him.

Gene

 

Yep

There is a coupling in the rubber hose that comes from the air pump. It will be laying on top of the frame and is located near the alternator. Separate the hose and spray a good shot of carburetor cleaner in the hose that runs toward the rear of the car.

Use some compressed air to force it through the check valves. Then follow up the cleaning with a little WD-40 and force that through.

If the check valves are just stuck shut, that should take care of it. If they are burnt or if the pump isn't working, you will still have the codes. You can see if the pump runs and pumps air by disconnecting the same coupling and when the engine is cold, the pump should run for a few minutes and then shut down. Thats the only time it runs. Upon cold start up.

Once you clean then you can see if the valve/s is/are working by starting the engine with the air supply hose disconnected. If you get exhaust out of the hose. one or both valves is bad. You can further isolate it down by disconnecting the hoses at the Y split at the fire wall
below and inboard of the brake booster. Just follow the 3/4" hose. The Check valves should pass air to the cats and NOT the other way!

BC