u/LawyerSea6018

We have done quite a bit of work on our 2009 Honda pilot and our check engine light is still on and the VTM-4. We’ve changed the Mass Airflow Sensor, changed to plus gas from regular, the cleaned out the hose connecting to the MAS, updated the computer, plugged in a spark plug more or something. Any ideas?? We don’t know where to go from there. Every time we go in they have something else to fix that’s hundreds of dollars and the engine light is still on. Code P0171