With some vehicles the warnings clear as soon as the reflash is finished and the ignition is cycled.
For other vehicles you need to drive about 100 feet to clear the warnings.
For yet other vehicles, Accords especially, the warning may stay for 2-3 driving cycles. If there are no error codes shown but the check engine light is on, starting the engine and then immediately switching it off four times will clear the check engine light.
You can clear the errors from FlashProManager.
- With the ignition on but engine off, connect the FlashPro and start FlashProManager.
- From the Online menu select OBDII Diagnostics
- Select the rightmost tab Diagnostics
- Select Refresh
- Select Clear DTCs
- Switch the ignition off