What are the reasons for the fault light on Wuling Rongguang Mini Truck?

3 Answers
SanLucille
07/24/25 4:39am
Engine fault light usually indicates the following reasons: 1. Combustion: Poor combustion state. 2. Engine: Engine knocking. 3. Fuel: Poor fuel quality. 4. Engine cylinder: Dirty engine cylinder interior with accumulated carbon deposits. More related information is as follows: Self-check function: The engine has a self-check function to detect some faults on the car engine, mainly including faults of sensors and actuators. When a fault is detected, the computer will store this fault in the form of a fault code and will light up the fault indicator to remind the driver to take corresponding measures.
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DiAnna
08/10/25 10:45pm
I've been repairing cars for 20 years, and the cause of the Wuling Rongguang Mini Truck's warning light coming on can vary widely. The most common issue is sensor malfunctions, such as an oxygen sensor failure causing excessive emissions, which triggers the dashboard warning light; or low oil pressure due to an aging oil pump failing to supply sufficient oil, easily activating the light. There are also cooling system problems, like excessively high water temperature or a non-working fan, where the ECU (that computer control module) detects abnormalities and immediately lights the warning. Don't delay—this could affect the engine's lifespan. I recommend owners first check the OBD diagnostic port for fault codes. Simple codes can be handled yourself, but for complex ones, it's best to visit a professional shop. Regular maintenance, such as changing the oil and cleaning sensor connectors, can help keep the warning light off.
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StAna
09/24/25 5:44am
I've been delivering goods with the Wuling Rongguang mini truck for several years, and that time when the warning light came on really scared me. The cause might have been a minor issue with the emission system, such as oil or carbon buildup on the rear oxygen sensor, making the vehicle detect abnormal exhaust; or the battery was aging, causing unstable voltage and the system falsely reporting a fault. The result? I tried resetting the ECU (disconnecting and reconnecting the negative terminal), and the light went off, but for safety's sake, I still went to the 4S shop for a check. The mechanic said mini trucks are prone to this issue, especially after rough road conditions causing wiring to loosen. He advised driving gently without sudden acceleration, regularly checking the battery and wiring, and not panicking when the light comes on.
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