What to Do When the Transmission Warning Light Comes On?

[DiAnderson]

When the transmission warning light comes on, it may indicate a signal malfunction or issues with the circuit and computer board, requiring inspection and repair at a 4S shop. The possible causes for the transmission warning light to illuminate can be broadly categorized into the following three types: 1. False alarm: A fault code is reported, but the system operates normally. This could be due to an operation that temporarily exceeded the computer's control range, prompting the computer to feedback a fault code. The code can be cleared initially, and then observe whether the fault code reappears. 2. Minor fault: The transmission does not show any particularly obvious malfunction, but further inspection based on computer diagnostics reveals an actual issue that does not significantly affect normal driving or has minimal impact. It is important to detect and address such faults promptly. Examples include faults with the intake pressure sensor. 3. Major fault: Such faults can be easily detected through visual inspection and driving experience, and they severely affect the normal operation of the engine, necessitating immediate repair. For instance, noticeable engine power loss is likely due to issues like an oxygen sensor malfunction.