Hi there ...
I hope someone can help me with a little issue I am having. I have a check engine light, which, when read comes back still as P0411 (Air Injection System Fault). Thinks I have done so far:
* Replaced the air check valve (there was a loud whining sound on a cold start which has now gone away after the valve replacement). The old valve was caked in carbon once I opened it up.
* Replaced the relay
* The air pump has a strong current of air coming out of the hose and the suction is good on the pump
* All of this was done last Saturday, so I have started the engine cold a number of times.
I have driven over 100 miles since replacing the valve. I thought that driving 100 miles would clear this code? I will swing by Advance Auto tonight and have the code re-read and see if they can clear it.
I need to try and figure this out asap as I have to get the truck inspected this month
side note: The truck is a 2008 LS and has 75,000 miles on it. This is the first issue I have ever had with this truck. Well apart from having to replace the side mirror last year.
Is there something I am missing, or not doing to correct to get rid of this code?
Thanks for any help in advance,