2004 Clk 500 cabriolet, Code po104, Have replaced mass airflow sensor. Still getting same code.. Dealer says mass airflow sensor or wiring harness or m.e. Control unit.. They want about $5,500 and change to fix, Any help or suggestions would b appreciated.. reddy1.

 

Check all wiring and replace all associated fuses (even if they look good). Buy some CRC Electrical cleaner, take your MAF out of the car and clean it (and all electrical contacts) really well. See if that works.

G/L

 

thanks for the info, really appreciate you..

 

My pleasure. LMK how it goes.