I think I have a my LR DII issues solved but one. I've replace a ton of sensors and gaskets to stop oil leaks and turn off the SES light. I have only one code appearing now and it PO112 which it the IAT sensor from what I understand. When I replaced the MFA sensor I went to NAPA (the lowest bidder). I was told a non-land rover MFA sensor will throw this code. Is that true? Anyone know? Is this causing harm to my vehicle?

 

My money would be on the MAF. Get the proper bosch MAF.

 

Yes, a after market MAF, not MFA, will throw codes. Buy only one with a matching part number, try BritishpartsofUtah.