What Causes the Fault Light to Illuminate in JAC Refine?
3 Answers
JAC Refine fault light illumination may be caused by issues with the vehicle's stability control system. Vehicle Fault Lights: Vehicle fault lights are indicator lights that illuminate when certain malfunctions occur in the vehicle. For example, if the battery is dead, the battery fault light will illuminate. Main vehicle fault lights include: The engine indicator displays the engine's operating status. If the oil warning light remains illuminated while driving, it indicates the oil level is below standard. The tire pressure warning light shows tire pressure conditions - if this warning light illuminates, it means the tire pressure is insufficient or the tire is damaged. The brake indicator light automatically illuminates when the handbrake is engaged and turns off when released. The airbag indicator displays the airbag's operational status, typically performing a self-check when the vehicle starts, with the light turning off after a few seconds.
The most common reason for the malfunction indicator light (MIL) to illuminate on a Jianghuai Refine is minor issues with the engine or emission system. For example, an aging or dirty oxygen sensor can affect the computer's monitoring of exhaust gases, triggering a false alarm. Another possibility is problems with the ignition system, such as carbon buildup on spark plugs or faulty coils, leading to incomplete combustion and increased fuel consumption. The fuel system can also be troublesome—clogged fuel injectors or insufficient fuel pump pressure can cause the engine to malfunction. Additionally, unstable battery voltage or alternator failure may interfere with the electronic control unit. I once encountered a faulty coolant temperature sensor, and the light made driving uneasy. Don’t delay; use an OBD scanner to diagnose the specific trouble code and have it fixed at a professional shop to save hassle. Regular maintenance, including checking sensors and fuel lines, can prevent issues before they arise.
From my years of driving the JAC Refine, I've learned that when the warning light comes on, it's usually the sensors causing trouble. The oxygen sensor malfunctioning is the most common issue—it monitors the exhaust pipe, and if it gets dirty or fails, the light flashes immediately. If the intake pressure sensor ages and can't measure air volume accurately, the engine's efficiency drops. Then there's the crankshaft position sensor failing, making the engine run unevenly. Electronic systems are so complex that even a tiny error can trigger the alarm. I suggest you first buy an inexpensive OBD interface and connect it to a phone app to read the fault codes and pinpoint the exact problem. This way, repairs are targeted, and you won't waste money replacing parts randomly. Keeping the engine bay clean and changing filters regularly also helps reduce such issues.
