What causes the SVS light to illuminate in Jiangling vehicles?
4 Answers
The SVS light in a vehicle is similar to the engine malfunction indicator light. When the SVS light illuminates, it indicates that the engine control unit has detected an erroneous signal from a sensor or that the sensor has exceeded its operational standards. When the ignition is turned on, the SVS light will illuminate for an automatic check and then turn off after a few seconds. Possible faults that may cause the SVS light to illuminate include: 1. Poor engine combustion state; 2. Engine knocking; 3. Poor fuel quality; 4. Dirty engine cylinders with carbon deposits; 5. The electronic control unit being unable to retrieve engine data. Solutions for when the SVS light illuminates are as follows: 1. Try starting the engine. If it fails to start, the issue might be an abnormal fuel pump that cannot supply fuel to the engine properly. 2. If the engine can still start, the problem might be with other sensors. In this case, the vehicle can still be driven, but the fault may affect normal vehicle operation, such as increased fuel consumption or body shaking. It is recommended to have the vehicle inspected at a repair shop as soon as possible.
My car is a Jiangling, and last time when the SVS light came on, I was really panicked. I asked the mechanic, and he said common causes include issues with the emission system, such as a faulty oxygen sensor or problems with the catalytic converter; it could also be engine-related faults, like loose ignition coils or clogged fuel injectors; or the electronic control unit (ECU) sending incorrect signals. I later drove to the shop for diagnostics, and they found it was due to poor electrical contact. I recommend getting it checked as soon as the light comes on—don’t delay like I did for a few days, which almost caused more damage to other parts. Regular maintenance and periodic checks of these components while driving can help avoid similar troubles, saving both hassle and money.
The SVS light typically indicates that the vehicle system requires service. Focus on the OBD monitoring section, as the emission control module may report faults such as evaporative leaks or a stuck EGR valve; abnormal signals from sensors like ABS or transmission-related components; or issues with the ECU software or wiring shorts that can also trigger the light. It's best to use an OBD scanner to read the codes and pinpoint the specific problem. Minor issues can usually be resolved quickly, but for major faults, don't push your luck—contact a professional technician promptly. I personally use simple tools to check, but always ensure safety and avoid making things worse by being overconfident. Regular maintenance of sensors and connectors can help reduce risks.
The SVS light is an alarm signal, don't ignore it. Common causes include a loose fuel tank cap, faulty oxygen sensor, or ECU false alarm. After parking, you can check if the fuel cap is tightened; if not, go to a repair shop for a diagnostic scan. The issue could be as simple as a minor circuit fault or as complex as engine misfiring. In any case, address it promptly and avoid long-distance driving to prevent sudden problems. If you're handy, keep an OBD device for self-diagnosis—it saves money and is convenient.
