What does the SVS light on in JMC Transit mean?
2 Answers
SVS light on indicates that the engine control unit has detected an error signal from a sensor or that it has exceeded the usage standard. Below are the functions of the SVS indicator light and the reasons why the SVS light is on: Functions of the SVS indicator light: The SVS fault indicator light is a warning light that appears when the ECU or TCU of an electronically controlled fuel injection vehicle detects an issue with the engine or automatic transmission. For manual transmissions, it is the engine fault indicator light, while for automatic transmissions, it indicates both engine and automatic transmission faults. When the ignition key is turned on, this light will illuminate and should turn off after the vehicle starts. If the engine detects a fault, the SVS light will stay on. If this light comes on while driving, it indicates an engine fault. Reasons for the SVS light being on: Poor combustion state; low-quality fuel; dirty engine cylinders with carbon deposits. Solution: Use the recommended grade of gasoline for JMC Transit and clean the carbon deposits.
I found that when the SVS light of the JMC Transit comes on, it usually means the engine control system has detected an abnormality. This could be due to emission issues, sensor failures such as the oxygen sensor or crankshaft position sensor malfunctioning, or insufficient fuel system pressure or blockage. Ignoring this light can easily lead to delays, ranging from reduced power and increased fuel consumption to severe engine damage. When I encounter this situation while driving, I first find a safe place to park and avoid pushing the vehicle. I promptly use an OBD scanner to read the fault codes to confirm the cause, then take it to a repair shop for inspection and repair. Long-term neglect may even lead to catalytic converter damage, which can be costly. Therefore, developing a habit of regular maintenance is crucial, such as frequently checking the air filter and spark plugs, to avoid such troubles.
