This means there is a component that is not working properly or not working at all in your abs system, it could also mean you have no power going to your abs system or an open wire in your abs system. It could also be the that the fuse is blown for you abs system.
The code P0 400, in your Chevrolet Geo tracker, is a reference to the ABS braking system not working properly. In most cases when the ABS braking system is not working properly you will need to change the sensor.
the amber ABS light indicates a problem with the ABS system, not the main braking system. but the main braking system is working.
If the vehicle itself has ABS, the entire braking system will have it.
ABS. The Automatic Braking System will cause the brake to pulsate when braking in hard conditions and on slick surfaces. This is a normal condition it is the result of you vehicles ABS system working properly
If the ABS light stays on, something in the ABS system isn't working properly, most likely the sensor. If it's rear-wheel only ABS, then the sensor is located on top of the rear differential. As long as the ABS light is on your ABS won't work but regular braking is unaffected.
There is a problem with the ABS system. It is part of Traction Control. If the ABS is not working then the Traction Control is not working. You still have standard braking but probably no ABS. Have this checked by a professional, as it can be many things.
The light is on usually because of damaged wiring or one of abs sensors is not working properly.
You either did not stomp the brake hard and keep it stomped or the ABS id not working properly. You must apply the brake fully and keep it there for the ABS to work. You may also only have 2 wheel ABS and not 4 wheel ABS.
have the abs system check
if your car is older with high mileage it could be just a malfunctioning dash bulb. or the ABS may not be working properly.
When the speedometer stops working and the ABS or traction disabled light comes on in a vehicle it indicates that the vehicle's ABS system is faulty. This could be indicative of a faulty wheel sensor or the ABS tracking system itself.