![]() ![]() Damaged Mass Air Flow Sensor Circuit Wiring or ConnectorsĪlthough code P0102 is not indicative of severe issues, prompt repair of any underlying condition is advised.The following are the most common symptoms associated with code P0102.Īn active P0102 code can come as a result of several different underlying issues. Although these additional symptoms are not present in 100% of cases, they are prevalent enough to warrant a motorist’s attention. In many cases, additional symptoms will present themselves with the presence of a P0102 diagnostic trouble code. Related: Code P0100, Code P0101, Code P0103 Symptoms of Code P0102 When a vehicle sets a P0102 trouble code, its PCM has determined that incoming data from the mass air flow sensor is invalid, and below the unit’s typical voltage threshold. Without rational input from the engine’s mass air flow sensor, the PCM cannot accurately meter fuel delivery, in the most optimal manner possible. This data is relayed to a vehicle’s PCM in real-time, which uses this data to calculate the proper amount of fuel to deliver, in order to optimize combustion. A mass air flow sensor detects the volume of air that passes through an engine’s intake tract, at any given time. To better understand the significance of code P0102, one must first understand what a mass airflow (MAF) sensor is, and how it operates. As a result, the PCM has determined this data to be irrational. This means that a vehicle’s PCM (Powertrain Control Module) has determined that the incoming signal from the engine’s mass air flow sensor is below the lower threshold of its operating range. Mass or Volume Air Flow Circuit Low Input ![]()
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