What are the reasons for the automatic transmission warning light to illuminate?

[StAlex]

Automatic transmission warning light may illuminate due to electronic component failure, severe mechanical component wear, erroneous signals, solenoid valve blockage, or computer damage. Transmission electronic component failure: The solution is to perform computer diagnostics at a repair shop and replace damaged electronic components. Severe mechanical component wear: The solution is to repair the damaged mechanical components. Erroneous signals: The engine or ABS system may send incorrect signals that interfere with transmission operation. The solution is to inspect the engine and ABS system and repair any damaged electrical components. Solenoid valve blockage: Contaminants in transmission fluid may block the solenoid valve. The solution is to disassemble the transmission valve body for cleaning and replace the transmission fluid. Transmission computer damage: Since solenoid valve signals require computer processing, computer damage can lead to abnormal signal processing, causing the transmission warning light to illuminate. The solution is to have the computer fault addressed at a repair shop.