![]() ![]() MAF sensor wiring is often the victim of rodent damage (particularly in the winter). First, perform a visual inspection of the ground connection, feeds, and wiring. It’ll be between the air filter and the throttle body. No matter the vehicle, the MAF sensor is usually pretty easy to get to. Here are the most common causes of P0100, presented to you from the easiest to most difficult to check. Check Engine Light– P0100 usually appears with other fault codes, such as P0171 or P0172.Fluctuating idle RPM– When the PCM can’t determine how much air enters the engine, it’ll have difficulty keeping a consistent idle speed.Engine running rich or lean– A lean or rich condition can happen at idle speed or high RPM.Here are the most common symptoms associated with the P0100 code: P0100 indicates that the voltage value sent to the PCM is outside its normal operating range. It compares the airflow measurement to a voltage value that the powertrain control module (PCM) understands. The MAF sensor is responsible for metering the air entering the engine (density and volume). P0100 is a generic code, so it has the same meaning for any vehicle with an OBD II system (1996+). P0100: Mass or Volume Air Flow (MAF) Circuit MalfunctionĪir Fuel Mixture Too Rich or Lean, Stalling, Can’t Find Idle, MIL Lightīad or Dirty MAF Sensor, MAF Sensor Wiring, Vacuum Leak It may be tempting to replace the MAF sensor without checking the electrical system and cleaning/testing it first, but it’s not guaranteed to clear P0100. This code is usually caused by a MAF sensor that is faulty, dirty or a wiring issue related to it. P0100 is a generic OBD2 trouble code that indicates an issue with your vehicle’s Mass Air Flow (MAF) Sensor.
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