What is the reason for the ABS light coming on after vehicle inspection?

1 Answers
Casey
07/29/25 5:17pm
The reasons for the ABS light coming on after vehicle inspection are: 1. Air in the system pipeline; 2. Computer system malfunction; 3. Vehicle speed sensor failure; 4. ABS wiring harness breakage. If there is air in the ABS system pipeline, it will seriously interfere with the regulation of dynamic pressure, causing the ABS system to lose its function. If the computer malfunctions, the ABS will not work properly. The activation and deactivation of ABS are achieved by the vehicle speed sensor transmitting signals to the computer. If the vehicle speed sensor fails, the ABS will inevitably not work properly. Dirty sensor connectors or improper air gaps in the sensor can also cause poor sensor performance. For example, if the sensing part of the ABS vehicle speed sensor is covered by mud, sludge, or other contaminants, it will affect the sensor's ability to detect the corresponding vehicle speed signal.
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