What happens when mass air flow sensor goes out?

When a mass air flow (MAF) sensor fails, it can lead to incorrect readings of the amount of air entering the engine. This can cause poor engine performance, reduced fuel efficiency, rough idling, and stalling. The engine control unit (ECU) may struggle to adjust the air-fuel mixture properly, leading to increased emissions and potential damage to the engine over time. Additionally, warning lights may illuminate on the dashboard, signaling a need for diagnostics.