How to repair the U1900 fault code?

[OMax]

U1900 fault code repair method is to turn off the ignition switch, remove the negative ground cable of the battery, unplug the ECU wiring connector, and reinstall it to eliminate the fault. The following are relevant information about the battery: 1. Lifespan: The normal lifespan of a car battery is generally around two years; 2. Maintenance: If properly maintained, it can be extended, with the best lasting up to about four years. Signs of a dead car battery: The car is difficult to start after being parked for two days, and the car becomes noticeably heavier when driving with the air conditioning on. 3. Precautions for car batteries: Modern car batteries have protective functions and retain the minimum power required for ignition. If you turn on the key without starting the engine, you can listen to music or turn on the lights for about an hour.