1993 Accord, start the car, runs for three minutes NO ABS lights, move the car about 30 seconds later ABS light comes on. These are the codes:
1-4 The Pressure Switch
8-1 Operation of the ABS

So what does it mean, I guess the pressure switch is, well the pressure switch, but what about 8-1 Operation of the ABS?
Thanks
Zeek

 

8-1 can be triggered if you drive down a rough road or hit a few potholes. It's triggered when a wheel sensor signal disappears at speeds below 10 kph (6 mph)

Both 1-4 & 8-1 codes can point to a faulty ABS control unit.

Clear/Reset your ECU/DTC codes and try this for the 8-1 code.

 

Thank You I will give it a try!