I know the maf sensor has been discussed to death on here and I’ve read most of them posts to try and diagnose my problem. 2004 1.6 tdci 109. Car randomly goes into what feels like limp mode but without any dash warning lights. Complete loss of power, makes driving ridiculous! I blanked the egr valve, still had the same problem. I noticed a small split in the maf to turbo hose so changed that, cleaned the maf sensor while I was at it and it worked for a week but the problem came back. I unplugged the maf sensor and the problem went away. I assumed the maf sensor was knackered Bought and fitted the new maf sensor, and the problem has returned! So I’ve unplugged it again and the car runs ok.