You can bypass the EOB speed sensor by turning cruise off. See instructions.
EOB Cruise Control Guide (With CAB-1 Commands):
Your model is equipped with Train America Studios E.O.B. (Engineer On
Board) Cruise Control. All features of the cruise control can be accessed
through entering commands using the CAB-1 remote. Enter the
commands slowly as it takes time for the signal to be received by the
circuitry. With this system you can operate your model in 3 modes, 32
Step Cruise compatible with Lionel, 128 Step Cruise, compatible with
MTH and Cruise OFF. Enter the following commands slowly, pressing
each button and waiting 1/2 second before pressing the next.
[DIR], [AUX1], [AUX1], [AUX1], [1] - 32 Speed Step Cruise (Lionel Comp.)
[DIR], [AUX1], [AUX1], [AUX1], [2] - 128 Speed Step Cruise (MTH Comp.)
!!! [DIR], [AUX1], [AUX1], [AUX1], [3] - Cruise Control Turned OFF !!!
If the model operates fine without cruise, then leave it that way. If you want to upgrade with ERR components, we got them.
Scott Mann