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P1102:21-EC MAF sensor error

26K views 7 replies 7 participants last post by  boge1985  
I have been living with this p1102 for 6 months and started changing from maf, map, throttle body, injectors egr etc... No cure after digging in deeper last week decided to check my timing guess what after I locked the flywheel the cam hole gone passed 1 tooth from the timing hole then I investigated it further to find out why it has happened, found the culprit there is a tiny pin on the engine block to hold the tensioner pulley which is not there so the tensioner was stretched the belt to move forward by 1 tooth. So change the belt and water pump from gates. And the car running as sweet as before and the performance and power restored. Hope anyone with p1102 before changing any parts check your timing and easy way to check lock the flywheel first then try lock the cam then you will know where you standing. Hope it helps someone as I spent ÂŁ2k instead of ÂŁ200.