I have an LBZ mouthpiece and induction tube on my LLY. I also have my EGR blocked. After 1500 miles without a problem, I was driving in a hard rain. My air box is modified and my stock filter got wet. I threw a P0101 code. I thoght it was from the wet filter. Changed filter and cleaned MAF. SES came back after a few key cycles and continued to get more frequent. Now it comes back almost immediately. I have since gone back to stock air box. I have CA emmissions. Would a egr block contribute to this code? (I thought that was P104). Any ideas on what could be causing this or what I should do?