Hi,

I cannot figure how a water pump will do that....

Does your ABS light working when you turn ignition switch ON?

When your engine is running do the ABS light come on at the same time of your Check Engine Light (Cel)?

If the Abs light come on at the same time, Check your OVP relay located behind your battery.

If you have only the CEL that come on then check O2 sensor.

Have a nice day
Max