Why Does the Urea Malfunction Light Illuminate in China V Standard Trucks?

[StParker]

Urea malfunction light typically indicates issues with the nitrogen-oxygen sensor or urea nozzle. Below are detailed explanations for the illumination of the urea light: 1. The truck's urea light may illuminate due to urea depletion. In some cases, the vehicle lacks power despite normal urea consumption, and slight white smoke may be observed emitting from the muffler during sudden acceleration. 2. Low urea pressure accompanied by high urea consumption. 3. Insufficient power with either excessively high or low urea consumption. It is advisable to promptly replenish urea or replace the urea pump and power supply module connector. After replacement, rechecking the urea fault code can clear it, except for sensor power supply 3 which cannot be cleared.