The Explanation and Solution of Fault Light in National VI SCR Aftertreatment System

Today Let’s Talk about The Explanation and Solution of Fault Light in National VI SCR Aftertreatment System.

DPF process

1.DPF regeneration prohibition indicator light：

The Reason of lighting: When the user presses the disable regeneration switch, the regeneration function of the DPF is disabled：

The Method of Solution: When checking for active regeneration in the parking area, the engine exhaust temperature is high. Therefore, in gas stations or dangerous places, the regeneration ban switch should be pressed to ensure safety. When turning off the regeneration ban switch again, the indicator light will turn off.The color of the fault light is red.

DPF regeneration fault light：

The Reason of lighting：DPF has varying degrees of blockage.

The DPF regeneration fault light can be divided into the following situations based on its lighting mode.

The Method of Solution:

1.Always lighting on: DPF slightly blocked, increase vehicle speed, or perform parking regeneration operation.

2.The Light Flashing : DPF severely blocked, performing in-situ regeneration.

3.Flashing and accompanied by engine malfunction light: severely blocked, requiring immediate parking regeneration.The fault light color is yellow.

DPF regeneration work indicator light：

The Common reasons for lighting up:

1.The Reason of Flashing or staying for a long time.

The Method of Solution:Remind the driver that the exhaust port should be kept away from flammable materials without any operation, and wait for regeneration to complete before extinguishing on its own. The indicator light color is green