What Are the Common Faults in New Energy Vehicles?

1 Answers
EverlyLee
07/30/25 10:15am
Here are the common faults in new energy vehicles and their causes: 1. Exclamation Mark Fault: 1. The system detects that the battery temperature exceeds the preset safety threshold. 2. The system detects sporadic fault signals and autonomously restricts some vehicle functions. 2. Power Battery Insulation Fault: Water ingress in the electric vehicle battery box or connectors, battery cell leakage, high environmental humidity, false insulation alarms, or insulation failure in other high-voltage components (such as the controller, compressor, etc.). 3. Power Limitation Light On: 1. The power battery is nearly depleted, and the vehicle enters a protective state. 2. The system detects a fault in the vehicle's circuit system. 3. The power battery temperature exceeds the safe range. 4. Power Battery Temperature Fault: 1. Loose cooling fan connector. 2. Cooling fan malfunction. 5. Abnormal Motor Noise: 1. The concentricity between the motor and rear axle does not meet the standard. 2. Poor contact between the brushes and commutator. 6. Complete Power Loss in Electric Vehicle: 1. Blown fuse. 2. Loose wiring connector. 3. Faulty power switch.
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