How to Solve the Problem of MIL Warning Light Staying On?
2 Answers
Solutions for the MIL warning light staying on: When the vehicle's malfunction indicator light illuminates, if inspection reveals obvious faults in the fuel system, air intake system, or electrical system that do not affect normal driving, you can choose an appropriate time to visit a repair station. However, if the existing malfunction impacts normal driving, you must immediately go to a repair station for service and avoid attempting blind repairs on your own. The MIL (Malfunction Indicator Lamp) signifies that there is a fault in the engine system. Generally, when the OBD warning light comes on, the ECU will use pre-set data to temporarily replace the faulty data, causing the vehicle to operate based on false data. As a result, many routine operations may be affected.
Last time I encountered this issue in my car, the MIL light was on, and the car was acting strangely. If this light stays on, it indicates there might be an engine problem, possibly related to a sensor, such as the O2 sensor not functioning properly, leading to excessive emissions. It could also be due to worn-out spark plugs or a clogged fuel system. Continuing to drive in this condition may increase fuel consumption and potentially damage the engine. I'll first plug in an OBD-II scanner to read the trouble codes. If it's a minor issue, I can replace a small part myself; otherwise, it's best to take it to a repair shop for a professional check-up to avoid bigger expenses later. Regular maintenance, such as checking the air filter and engine oil, can help prevent such issues. In any case, addressing the problem promptly is the safest approach—safety first.
