Qamer Malik

W212 e250 cdi 2011 P0101 ERROR maf replaced still p0101

Hi guys maybe some help

I had p0101 eml, carried on driving which eventually blocked dpf my fault withbDPF BLOCKED ERRORS as no regens were takin place. Vehicle dpf removed and remapped.

New MAF sensor replaced aftermarket, still p0101 and further error codes P0102 I think.

Removed and got an oem MAF SENSOR, fitted still the same issue.

EML with code P0101 still on

Vehicle has approx 80% power turbo every thing kicks in, however NO KICKDOWN AND SLOW TO PICKUP, once it reaches 1.5k rpm turbo kicks in and moves ok. Its just when i put my foot down flat it is hesistant and slow until certain rpms.

​​​​​​​I think its vaccum leak not sure where to even start as always the error code p0101 still there which refers to MAF SENSOR

Please help guys

dave2001auto

I am facing a similar problem. Essential any sensor or leak or clog along the air flow and exhaust can cause that code. Usually the maf don’t break but may need cleaning. I have cleaned the MAP sensor and it when away for a year. Now replaced both Absolute pressure sensors, expensive ATR sensor and still have the problem. That leaves the turbo pressure sensor (cheap) to replace before the expensive MAF sensors. The pressure sensor just came in. The turbo temp sensor can also cause that code. Good luck. On a better scan more codes came up on mine. Best to buy a very good scanner. Shopped charged $240 for the diagnostic test and came up with more codes and at least $500 in parts for the code/limp plus labor and possible $2000+ in labor to fix an oil leak too. The bluetec is a money pit.