What causes a MAF sensor to go bad?
The MAF (Mass Air Flow) Sensor is dirty or faulty (if equipped). Note: The use of “oiled” air filters can cause the MAF to become contaminated if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
Can a bad mass air flow sensor trigger a check engine light?
Bad mass air flow sensor with no check engine light? Sometimes a mass airflow sensor can start to fail and even trigger engine error codes such as P0101 and P0102, without triggering a check engine light. There must be a problem with the mass airflow sensor circuit for the check engine light to illuminate.
How do you remove a mass airflow sensor?
This is done by opening your vehicle’s air box and using a flathead screwdriver to pluck it out. When removing the sensor, be sure to never touch the wires. A disconnected mass airflow sensor can’t electrocute you, but the wires are delicate and small.
What kind of air flow sensor do I need for my MAF?
Depending on the year and make of the vehicle, you may find different types of mass air flow sensors, from the old-style vane air flow meter to the modern era hot-wire mass air flow meter. Since hot-wire technology is the most widely used today, we’ll assume that your MAF is using that design.
What does the p0174 code on a MAF mean?
The most common reason for the P0174 code is a faulty MAF sensor or a vacuum leak somewhere. It can also be low fuel pressure-related problems like a weak fuel pump or clogged fuel filter.
What is the rich code on the GM MAF sensor?
P0102 Mass Air Flow Low Frequency. P0103 Mass Air Flow High Frequency. Lean and/or Rich code (s). Fuel Trim code (s). A tremendous lack of power upon acceleration. Black smoke coming from the tail-pipe. Vehicle may idle rough and stall.
What are the symptoms of a bad MAF sensor?
The symptoms of a bad mass air flow sensor include a car that is difficult to start, bad fuel economy, a rough idle, lack of power especially when accelerating and sometimes a fuel smell from the exhaust fumes. A properly functioning MAF sensor is vital for an engine to run efficiently.
What does MAF code on Check Engine light mean?
MAF Codes that light up the check engine light (CEL) on your instrument cluster. P0102: Mass Air Flow (MAF) Circuit Low Input. P0103: Mass Air Flow (MAF) Circuit High Input. MAF sensor malfunction that DOES NOT light up the check engine light (CEL). Lean and/or Rich code (s). Fuel Trim code (s). A tremendous lack of power upon acceleration.