My 'check engine' light came on. I took my WRX to the local dealership. The first thing they asked me was if I'd recently had the gas cap off. I told them I knew about that one and that my cap was on tight. Next they asked about my K&N air filter. I copped to that. Yeah, I have one installed. They tried to blame it on that. I told them that the check engine light didn't come on until at least 6 weeks after I installed the K&N filter. Next they said I needed a new Mass Airflow Sensor. Do you know how much those things cost? YIKES. I said that it didn't seem like a Subaru Mass Airflow Sensor should go out after only 60,000. So they cleaned it. Said that it was carbon buildup. And they reset the light. Three weeks later and the light is back on again.
Before I pay a lot of money for a new Mass Airflow Sensor, does anyone out there have any input about this? Do WRX’s go through airflow sensors in just 60,000 mi? Is the dealership full of it? Or is a bad and terribly expensive sensor a real possibility?