96 ford ranger abs yellow light on

need help ps.// I replace the frond brake pads. press the piston caliper using a c- clamp. when my brake job is done, start the engine, pump the brake now the yellow light come on.

Make sure the fluid level in the master cylinder reservoir is topped up. There's a sensor on the side that reads the fluid level and will trip the light if the fluid level is too low. However, if you have 4-wheel antilock brakes (I'm not sure if the 96 was available with only rear-wheel antilocks but I think it was) and during the brake work you disconnected the ABS sensor or somehow dislodged or damaged it, you'll trip the system. Go over it carefully because it's probably $40 or so to get a replacement sensor and there's no fix if it's damaged other than replacement.

Top up the fluid level and see if the light goes out, then jack it back up and check to see if something happened to the sensor if you need to. If you only have rear antilock brakes than the fault could well be a blown sensor at the rear diff and that's an easy fix and should run you about $15 or so at autozone/advance auto.

Good luck!

thanks for your help! (ilLUMINATeddriver) I will change the rear sensor next month I'll let you know!

BTW I change the sensor at the rear & the yellow light still ON

BTW I change the sensor at the rear & the yellow light still ON
Go to Auto Zone or advanced and ask them to remove the codes. I've had to disconnect the battery ground before to get the light to go out. Make sure all wires are connected on the front wheels.