P0402 code

[spongebob]

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?

[DmaxMaverick]

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.

[spongebob]

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..

[DmaxMaverick]

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.

[spongebob]

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

[spongebob]

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