Engine start/stop switch does not work

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2020 Honda Fit, 2019 Honda Fit, 2018 Honda Fit, 2017 Honda Fit, and 2016 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostic procedure

1.
Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting

Also check for

Accessory relay
Keyless access control unit
Engine start/stop switch
SS1 (+) line short
SS2 (-) line short
Harness