Honda 2010 Civic Hybrid Owner's Manual page 266

Automatic Transmission (CVT)
Continuously Variable
Transmission (CVT)
Honda's Continuously Variable
Transmission's unique design
provides a smooth, constant flow of
power. It is electronically controlled
for more precise operation and
better fuel economy.
260
Shift Lever Position Indicators
These indicators on the instrument
panel show which position the shift
lever is in.
The ''D'' indicator comes on for a
few seconds when you turn the
ignition switch to the ON (II)
position. If it flashes while driving (in
any shift position), it indicates a
possible problem in the transmission.
If the malfunction indicator lamp
comes on along with the ''D''
indicator, there is a problem with the
automatic transmission control
system. Avoid rapid acceleration, and
have the transmission checked by
your dealer as soon as possible.