I recently had two brake lights staying on and the autostop not working (engine turning off when stopped in traffic whilst driving) on my Honda Civic ES sedan hybrid. In both cases it was due to a small plastic spacer being broken under the brake pedal switch. Take the plastic cover off in the driver's foot well under the steering wheel and it was easy to spot. I could have waited for a replacement part but decided a small bolt with a nut to hold it would do, and it works perfectly fine. It'll also never break again.