The mass airflow sensor is a key sensor in your car. The difference between the two codes is that the pcm has identified the sensor output as faulty for a p0102 code.
This code is similar to p0100 maf sensor circuit malfunction.
Mass air flow sensor code. In this article we will look at what happens when you disconnect the mass airflow sensor. P0102 mass air flow maf circuit low technical description. That brings up the question of can your car run without the mass air flow sensor.
What does that mean. Mass or volume air flow circuit low. Diagnostic trouble code dtc p0102 stands for mass air flow maf circuit low the code is set when the powertrain control module pcm your car s primary computer perceives a problem with the mass airflow maf sensor s performance.
Hot wire maf sensors often become dirty causing a p0102 code. This diagnostic trouble code dtc is a generic powertrain code which means that it applies to obd ii equipped vehicles that have a mass airflow sensor. This code is really pretty basic on these.
Sorry for the delay. The pcm detects that the actual maf sensor frequency signal is not within a predetermined expected range of the calculated maf value. What does the p0101 code mean.
The code p0102 code is often associated with p0100 p0101 p0103 or p0104 trouble codes as they are closely related. The obd ii code p0101 is set when the signal from the mass air flow sensor is out of expected range or in other words the maf sensor doesn t work properly. When diagnosing maf sensor codes understanding fuel trims is very important.
What the p0102 code means 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. Your car has a lot of sensors and this is just one that helps your car run properly. Basically this p0101 diagnostic trouble code dtc means that there is a problem with the mass air flow maf sensor or circuit.
Diagnostic trouble code dtc p0101 code stands for mass or volume air flow a circuit range performance this is logged by onboard diagnostics when the maf sensor relays readings that are either irrational or out of range. In most cases this code is not very difficult to diagnose. Disconnect the mass air flow sensor then looking into the harness connector from left to right check pin 2 for battery voltage.
The mass airflow sensor maf measures the amount of air entering the engine. P0101 mass or air flow volume sensor circuit range performance p010162 p0101 62 mass air flow sensor 1 has a malfunction the signal comparision is faulty p0100 mass air flow maf sensor circuit malfunction.