What does a check engine light typically indicate in relation to the automatic transmission?

The check engine light serves as a warning indicator for a range of issues related to the vehicle's performance and systems, including the automatic transmission. When this light illuminates, it often means that the vehicle's onboard diagnostics system has detected a problem that could affect the engine or transmission. Specifically for the automatic transmission, it indicates that there might be a malfunction in the transmission system itself, such as issues with the transmission fluid, sensor failures, or other related components that could impact the vehicle’s ability to shift gears properly.

This light is crucial because it alerts the driver to potential problems that, if left unaddressed, could lead to more severe damage or costly repairs. By indicating a possible issue with the transmission system or its sensors, the check engine light encourages timely diagnostics and repairs, ensuring the vehicle remains safe and operational.