Posts Tagged: P0101 trouble code

P0101 code — What it means and how to fix it

Learn what a P0101 code means, the most common causes and fixes A P0101 code is defined as Mass Airflow (MAF) Circuit Range/Performance Problem.  relates to a problem with the mass airflow sensor. Common codes are P0101, P0102, P0103 and P0104. However, a P0101 code means the signal the computer is receiving is too far below the expected value. Most common causes of a P0101 code The MAF sensor measures the amount of air entering the engine and the air’s density. Based on the MAF sensor readings, the ECM calculates … Read More