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The MAF (Mass Air Flow) sensor measures the volume and density of air entering the engine, allowing the ECU to calculate the correct fuel injection quantity. A faulty MAF causes poor fuel economy, hesitation, and diagnostic codes like P0100 and P0101. At CarParts247 we stock MAF sensors from Bosch, Pierburg, and Hella for accurate engine management.
MAF sensor faults cause the ECU to use default fuelling values, resulting in noticeably different engine behaviour. Symptoms can range from subtle economy changes to severe drivability problems.
Hot-wire MAF sensors can sometimes be cleaned with specialist MAF cleaner spray. Never use brake cleaner or contact cleaner — these damage the delicate sensing element.