Boeing 737 captain reported a rejected takeoff due to difficulty with directional control.

Attributes
ACN	1538759
Time
Date	201804
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

First officer leg captain monitor! At start of takeoff roll aircraft veered right while I felt first officer use full left rudder! Reject was called and I kept aircraft on runway with the tiller. We slowly taxied testing the rudder pedals with no effect! Tiller worked normally so we vacated the runway and slowly taxied in. Maintenance took aircraft out of service.

Original NASA ASRS Text

Title: Boeing 737 Captain reported a rejected takeoff due to difficulty with directional control.

Narrative: First Officer leg Captain monitor! At start of Takeoff roll Aircraft veered right while I felt First Officer use full left rudder! Reject was called and I kept Aircraft on runway with the tiller. We slowly taxied testing the rudder pedals with no effect! Tiller worked normally so we vacated the runway and slowly taxied in. Maintenance took Aircraft out of service.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.