What is VAF sensor?
The VAF (volume air flow) sensor measures the air flow into the engine with a spring-loaded air vane (flap/door) attached to a variable resistor (potentiometer). The vane moves in proportion to the airflow.
What is code P0102 mean?
Mass Airflow
P0102 is the general code for a problem with the Mass Airflow (MAF) Sensor having a low voltage output to the Engine Control Unit (ECU).
What does p0100 mean on a MAF circuit?
P0101 Mass or Volume Air Flow “A” Circuit Range/Performance P0102 Mass or Volume Air Flow “A” Circuit Low Input P0103 Mass or Volume Air Flow “A” Circuit High Input P0104 Mass or Volume Air Flow “A” Circuit Intermittent Photo of a MAF sensor:
What does a p0100 diagnostic trouble code mean?
This P0100 diagnostic trouble code (DTC) means that there is a detected problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not performing within the normal expected range of the calculated MAF value.
What is the trouble code for the MAF sensor?
The troublecode P0100 is set when the MAF sensor circuit is malfunctioning. This code is similar to P0104 – MAF sensor circuit intermittent. The difference between the two codes is the consistency of the malfunction in the MAF sensor circuit. Troubleshooting will be the same for both codes.
What does DTC stand for on a MAF sensor?
This P0100 diagnostic trouble code (DTC) means that there is a detected problem with the Mass Air Flow (MAF) sensor or circuit.
This P0100 diagnostic trouble code (DTC) means that there is a detected problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not performing within the normal expected range of the calculated MAF value.
P0101 Mass or Volume Air Flow “A” Circuit Range/Performance P0102 Mass or Volume Air Flow “A” Circuit Low Input P0103 Mass or Volume Air Flow “A” Circuit High Input P0104 Mass or Volume Air Flow “A” Circuit Intermittent Photo of a MAF sensor:
The troublecode P0100 is set when the MAF sensor circuit is malfunctioning. This code is similar to P0104 – MAF sensor circuit intermittent. The difference between the two codes is the consistency of the malfunction in the MAF sensor circuit. Troubleshooting will be the same for both codes.
What causes the DTC p0104 MAF sensor to stop working?
Depending on year, make, and model, DTC P0104 may have a number of causes. Here are some of the most common. Toyota / Lexus – The hot-wire MAF sensor is notoriously susceptible to oil contamination and aftermarket air filter contamination.