MAF Limp mode (P0101, 2011-1, 2011-2, 2633-1, 2624-1)
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W211 bluetec 2008
MAF Limp mode (P0101, 2011-1, 2011-2, 2633-1, 2624-1)
My 2008 w211 bluetec has this weird problem where it goes into limp mode, the only codes are the ones listed above in the title. It does it usually after a hard acceleration. I used a scanner to check live data and the MAF and IAT do both work but the intake air temp and boost pressure are just barely out of the parameters (1-5 degrees and units of boost). All though i did find a way to bypass limp mode completely. If i start the engine and then unplug both MAF’s while the car is running i can drive it as hard as i want without putting it into limp mode and it drives very good. If i start with MAF unplugged it goes into limp mode immediately and will go into limp mode with MAF connected after a hard acceleration. Ive checked all the hoses, wires, turbo, intake for any restrictions and cannot find anything out of the ordinary. I was planning on installing a switch on the ground wire of the MAF downstream of where they join so i can bypass limp mode without having to pop my hood every time i turn my engine on. Any advice or pointers would be appreciated.