B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Confusion; Distraction; Time Pressure; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Aircraft
After pushback and engine start; we taxied to Runway 30L. All checklists were complete and the aircraft was fully configured for takeoff. The First Officer was flying. Upon setting T/O thrust; we received the T/O configuration warning aural and light. We rejected the takeoff (low speed; maybe 15 kts) and vacated the runway. We reran every checklist from the beginning and found no faults with the airplane configuration. There were no systems faulted. All circuit breakers were in. After talking with Maintenance; we returned to the gate for troubleshooting. We are unsure why we received this warning. Maintenance is still troubleshooting at the time of this report.
Captain reported receiving the takeoff configuration warning aural and light on departure and aborting. The flight crew could not find any issues and returned to gate.