P0102 symptoms can vary from the vehicle running to fine to sputtering and misfiring. The sensor monitors the air entering the engine and measures the amount which is reported to the EMC for air fuelr ratio mixture. This is usually a problem with the mass airflow MAF sensor low voltage output but can also be caused by other things. If you have a Chevy Silverado with a check engine light, and after scanning for a trouble code, you get a P0102, there is an issue with the ECM reading the mass airflow. The wiring can be examined to see if there is an issue, and the fuse boxes can be checked for any possible blown fuses. The wiring harness can have a pin that is bad, which will cause a bad connection and failure.Ĭheck the wiring harness and use a multimeter to check the wiring for any possible shorts or open wires. The wiring can also be a source of failure if there is a shorted or open wire. There are different methods to test for a vacuum leak, with the most common to use a smoke machine to feed smoke into the intake, which will exit at any leak. Since the MAF sensor detects the air flow difference between the air intake and manifold, a vacuum leak in the manifold can cause an issue. NewYall Mass Air Flow MAF Sensor with HousingĪ vacuum leak can also cause a P0102 error code in some scenarios. Most buy with the housing since it is sealed good and there is not much difference in price.Įxample Chevy Silvarado MAF Sensor and Housing on Amazon The MAF sensor can be bought with the housing or separately. It is replaced by removing two big C-clamps and inserting a new MAF sensor. The MAF sensor is located at the air inlet box with wiring harnesses. The sensor may have failed and need a replacement which is a straightforward task to replace. The cleaner can be bought at an auto parts store or online on Amazon or eBay.ĬRC 05110 Mass Air Flow Sensor Cleaner – 11 Wt Oz. Of course, if in doubt, be sure to take your vehicle to a professional. They are easy to clean and are a fix that falls in the DIY category. If the data the EMC receives is bad, the engine will run poorly.Ī dirty MAF Sensor is the most common cause of P0102 OBDII error code on a Chevy Silverado. The ECM uses this information to adjust the air/fuel ratio. The MAF Sensor is what gives the onboard computer (ECM) information on air flow into the engine. What is the Mass Air Flow Sensor (MAF) Sensor? The onboard computer (ECM) uses the MAF sensor to know how much air has gone into the engine, and uses the information to adjust the Air/Fuel ratio. The MAF is located on the air filter box and measures airflow going into an engine.Ī P0102 OBDII Code usually indicates there is an error with the MAF (Mass Air Flow sensor). What Is a P0102 Chevy Silverado OBDII Error Code?Ī P0102 OBDII code “ Mass Air Flow Circuit Signal Low” or “ Mass or VAF A Ckt Low Input” error. While a faulty MAF sensor is the usual problem other things can also cause the error. If you have a Chevy Silverado with a P0102 OBDII error code, there is usually a problem with the MAF sensor.Ī Chevy Silverado P0102 OBDII code is a “ Mass Air Flow Circuit Signal Low.”
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