2003 Discovery, +/- 135k miles

My Service Engine Soon (SES) light came on recently. I was initially getting fault codes P0733, P0174, and P0171. I replaced my original OEM MAF with a cheapo Amazon $20 generic MAF, which eliminated the above-mentioned codes but started throwing codes P0172 and P0175. I replaced the cheapo MAF with a new OEM Bosch MAF and I've eliminated all codes.

Just posting as an FYI for people that may be experiencing similar codes and searching for solutions.

 

Thanks for the insights. I find that when I use Bosch parts, many issues are solved.

 

Thanks for posting.