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fuel level sensor not work when stop
Suggest checking the fuel level sensor circuit , whether the plug is rusted or loose, and whether there are any broken wires ? You can use a multimeter to measure. Among the three wires, one is a grounding wire that should be connected to the frame , and the other is a wire that supplies power to the sensor. When the ignition switch is turned on, there should be a 12V voltage. If there is no voltage, check if the corresponding fuse in the fuse box is burned? For example, the fuse box under the passenger dashboard.
This can lead to blockage for a long time, and in severe cases, it will cause the engine malfunction light to light up. Boosting problem; The intake turbocharging pipeline and turbocharger can also cause the engine fault light to light up. The most common one is damage to the turbocharger, and the vehicle may also experience symptoms such as oil leakage, high oil consumption, reduced power, metal noise, and blue or black smoke from the exhaust pipe. Exhaust issues; Rear oxygen sensor, three-way catalytic converter, exhaust camshaft and bearing shells. The most common one is the malfunction of the three-way catalytic converter causing the engine malfunction light to light up. The use of leaded gasoline, the use of lubricating oil additives containing lead or silicon, the collision of the ternary catalyst, and the failure of the engine fuel supply system are all factors that can easily cause the malfunction of the ternary catalyst.
Solution to oil level sensor fault: 1. Fault: No output/communication failure Analysis: A. Power supply open circuit or low voltage; A. Sensor failure; A. Wiring error resolution: Check if the wiring is correct - check if the power supply voltage is greater than 10V during load detection - check if the power supply current is 3-10mA - perform wiring, or switch the blue and yellow wires - if all the above checks are normal or the current exceeds the normal range, it is a sensor fault; The oil level sensor is faulty without a fuse. Its working principle is the oil float in the fuel tank. Directly powered by body modules or instruments. The internal resistance of the float reflects the fuel level in the fuel tank. The circuit of this oil level sensor is straight through, without a fuse in the middle.
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