The possible faults of the power system of Changan UNI-V include but are not limited to the following

1. Engine failure:

• Ignition system failure, such as spark plug damage and ignition coil failure, may cause the engine to lose cylinders, power reduction, or even failure to start.
• Fuel supply problems, such as oil pump failure, blocked or damaged injectors, will cause insufficient or uneven fuel supply, affecting power output.
• Intake system failure, such as air filter blockage, intake manifold leakage, etc., may lead to insufficient intake volume, incomplete combustion, and reduced power.
• Engine mechanical failure, such as valve failure, piston ring wear, crankshaft connecting rod problems, etc., will seriously affect the performance of the engine.

2. Transmission failure:

• Gear shifting setbacks and impacts may be due to abnormal transmission oil pressure or shift solenoid valve failure.
• Failure to shift gears involves gear sensor failure, transmission control module problems, etc.
• Abnormal transmission noise is usually related to gear wear, bearing damage, etc.

3. Sensor failure:

• Oxygen sensor failure can cause air-fuel ratio imbalance, affecting engine power and fuel economy.
• Throttle position sensor failure may cause poor engine acceleration.
• Intake air flow sensor failure will affect the accurate measurement of intake volume, thereby affecting the amount of fuel injection.

4. Turbocharger failure: If the vehicle is equipped with a turbocharger, turbocharger failure, such as impeller damage, pressure relief valve failure, etc., will cause the boost effect to decrease and affect power.
5. Electronic Control Unit (ECU) Failure: ECU is responsible for controlling the operation of the entire power system, and its failure may cause the power system to work abnormally.

It should be noted that the above are only some possible power system failures, and the specific situation needs to be judged based on the actual use and maintenance status of the vehicle.