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List of contents of this article:

• 1, What is the reason why the engine fault light of the electric injection diesel vehicle is always on?
• 2, What is the reason why the common fault light of diesel vehicles is on
• 3 、 What should I do if the engine fault light of a diesel car is on?

What is the reason why the engine fault light of the electric injection diesel vehicle is always on?

1. The intake pressure temperature sensor is damaged. Cause analysis: the intake pressure signal is abnormal, and the ECU cannot receive the correct intake information, resulting in abnormal fuel injection. If the combustion is insufficient, the engine is weak, and black smoke is generated during the refueling process. Problems with the harness connection and sensor failure will lead to the failure.

2. The specific analysis is as follows; sensor problems; the sensors mentioned here include water temperature, crankshaft position, air flow,Intak temperature, oxygen sensors, etc. When these sensors are damaged, poor contact or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, which will cause the engine fault light to turn on.

3. The common reasons for diesel vehicle fault lights are as follows: 1. The thermostat can't be turned on, and the coolant circulation is not smooth. The radiator or engine water cover is blocked, causing the coolant to fail to work properly. The water pressure of the pump impeller corrosion is insufficient. The radiator of the water tank is deformed or blocked by foreign objects, which affects the heat dissipation effect. The engine is ignited too late.

4. The thermoster cannot be opened, and the coolant cannot be circulated. The radiator or engine water sleeve is blocked, causing the coolant to not circulate normally. The water pump impeller corrosion pump water pressure is insufficient. The heat sink of the water tank is folded and deformed or blocked by foreign objects, which affects the heat dissipation effect.The engine is ignited too late.

What is the reason for the common fault light of diesel vehicle

[Pacific Automobile Network] The common fault light of diesel vehicles is that the thermosulator cannot be turned on, and the coolant cannot be circulated. The radiator or engine water sleeve is blocked, causing the coolant to not circulate normally.The water pump impeller corrosion pump water pressure is insufficient.

The radiator or engine water sleeve is blocked, causing the coolant to not circulate normally. The water pump impeller corrosion pump water pressure is insufficient. The heat sink of the water tank is folded and deformed or blocked by foreign objects, which affects the heat dissipation effect. The engine is ignited too late. The pump belt is too loose, etc.

Reference: sensor damage, poor contact or signal interruption; poor engine maintenance; poor quality of fuel and oil; insufficient combustion of mixed gas; spark plug failure, ignition coil failure.

The specific analysis is as follows; sensor problem; the sensors mentioned here include water temperature, crankshaft position, air flow, intake temperature, oxygen sensor, etc. When these sensors are damaged, poor contact or the signal is interrupted, the ECU of the car cannot accurately obtain the engine data, and at this time it will Cause the engine fault light to turn on.

What causes the flashing of the fault light of the diesel engine?

There is an abnormality in the water temperature sensor. When there is a problem with the water temperature sensor, the ECU cannot receive the signal from the sensor. At this time, in order to protect the engine of the vehicle and reduce the torque of the engine, the fault light of the car will begin to flash, reminding the owner to check the condition of the vehicle in time. The intake pressure temperature sensor failed.

Common reasons for diesel vehicle fault lights are: 1. The thermostat can't be opened, and the coolant can't circulate. The radiator or engine water cover is blocked, resulting in abnormal working circulation of coolant. The pump impeller is corroded, and the water pressure of the pump is insufficient. The cooling sink of the water tank is folded and deformed or blocked by foreign objects, which affects the heat dissipation effect.The engine is ignited too late.

The common reasons for diesel vehicle fault lights are as follows: 1. The thermostat can't be turned on, and the coolant circulation is not smooth. The radiator or engine water cover is blocked, causing the coolant to fail to work properly. The water pressure of the pump impeller corrosion is insufficient. The radiator of the water tank is deformed or blocked by foreign objects, which affects the heat dissipation effect. The engine is ignited too late.

What should I do if the engine fault light of a diesel car is on?

First, check the water temperature gauge and the oil pressure warning light. If the water temperature gauge and the oil pressure warning light do not alarm, the car can still be driven, but at this time, you must pay attention to controlling the speed and drive to the repair station in time. After the fault light of the diesel engine is on, it is divided into three situations, and each situation has different countermeasures: first, the car cannot start.

You should find a safe place to stop and check whether the engine is abnormal and whether there is oil leakage. If there is no abnormality after the inspection, it may be a false alarm of the fault sensing light.

Then judge the operation of the carburetor according to whether the fuel consumption of the engine is too high. If the fuel consumption is too high and the exhaust is very thick, there is a mechanical failure such as the volume hole falling off, which must be repaired as necessary. Finally, we need to judge the wear of the engine cylinder.

Detection and start the system. For such failures that the engine cannot start, the first thing to do is to detect the circuit in the engine start-up system. In terms of the most basic composition, the circuit of the starting system generally includes the following most basic parts, namely the battery, the starting motor and the cables connecting these components.

Diesel filter (and oil-water separator), if the diesel added is not very good, the fault light will turn on, just replace one.