P0402 code

Can I get a list of things to look at?? All clamps are tight..MAS look fine, but what would I clean it with besides MAS cleaner?

Try some electrical (contact) cleaner. Don't use Brakekleen (can damage the plastic and potting). Some aftermarket intake systems can make them more sensitive to otherwise normal conditions, such as a dirty air filter, which can alter the internal turbulence enough to cause faults. Also check for air leaks anywhere downstream from the MAF, as well as the connectors and harness.

Thanks..I have a Banks air intake...is it worH it to remove the EGR and clean it?? They are $250 on ebay for a new one..

I didn't look up the code, but yeah. Clean the EGR before dropping a bunch of cash. You can use Brake Kleen on that, once you get all the chunks off.

I pulled the MAS and found the horizontal ( The large one in the picture) was dirty.. Cleaned it and cleared the code..will come back and update...thanks

SEEMS TO BE ok, but I started another thread the pro’s and OP’s of pulling the EGR