What is the fault when the SVS light flashes in a diesel vehicle?
3 Answers
Diesel vehicle SVS indicator light is an engine fault indicator, indicating that there is a fault in the engine. After starting the engine, when the engine ECU detects a fault in the engine, the SVS light will illuminate, indicating that there is a fault in the vehicle's engine. The following is a detailed introduction to the solutions for the flashing SVS light in diesel vehicles: 1. You can try to start the engine. If it cannot start, it may be due to an abnormal fuel pump, which needs to be replaced. 2. If it can still start, it may be due to other sensor faults. In this case, the vehicle can still be driven, but it cannot be ruled out that the fault may affect the normal use of the vehicle. It is recommended to go to a repair shop for inspection as soon as possible. 3. When the vehicle is in use and the parameter standard values differ from those at the factory, the fault light (SVS) will illuminate, thereby prompting the driver that the vehicle has a fault.
Having driven diesel cars for so many years, the flashing SVS light often indicates an issue with the exhaust system, such as a clogged particulate filter or a faulty sensor. That time my car had this light flashing, I initially thought it was a minor issue, but when I drove on the highway, I felt a lack of power. After scanning it at the shop, they found out the oxygen sensor was broken—replacing it fixed the problem. For diesel cars, the exhaust system is particularly important. If it gets clogged, you might need forced regeneration; otherwise, fuel consumption will keep increasing. Now, I check it regularly to avoid these small troubles—safety comes first, and you should never delay repairs. You can pay attention to changes in the engine sound yourself, but it's best to consult a professional mechanic and avoid disassembling things randomly.
When repairing vehicles, I often see the SVS light flashing in diesel cars, mostly due to issues with the exhaust components. A clogged particulate filter is quite common, especially when driving slowly in urban areas, leading to carbon buildup that triggers the warning light. Sensor failures are also frequent, such as errors in temperature or pressure sensors, causing the system to misjudge. Another reason is poor fuel injection, and low-quality diesel can also be a factor. Troubleshooting isn't difficult; start by reading the fault codes with a diagnostic tool to avoid wasting money on unnecessary part replacements. I recommend that owners occasionally drive at high speeds to allow the filter to self-clean. If the light continues to flash, get it repaired promptly. Otherwise, not only will you face fines for exceeding emission limits, but it could also damage the engine.
