Our 2007 S lost some power suddenly, yellow engine light came on and it threw codes P115c & P115d, both MAF/airflow. I checked all hoses, everything looks fine. Unplugging the MAF changes nothing so I'm deducing the sensor is shot. I have a reman coming in for just over $200+core. Dealer wants almost $700 new. I tried cleaning it with no effect. Airfilter was filthy, testament to Ferman in Palm Harbor FL not doing **** during the multiple service intervals. I replaced it for $21.

Symptoms are it's lacking most of the boost. Smooth idle, starts fine, just acts like it's down to about 100HP, I'm guessing less than 1/2 boost.

 

New maf in - no change.

 

Found the problem- loose turbo hose at intercooler, passenger side.