Honda Civic Sedan Warning Lights: What They Mean

Amber: check soon

Lane Keeping Assist System (LKAS) Indicator (Amber)

There is a problem with the LKAS; it may come on briefly if the maximum load limit is exceeded.
What to do: If it stays on, have a dealer check the vehicle. Keep total load within the maximum load limit. PDF page 108

Other warnings and indicators

Charging System Indicator

There is a problem with the charging system.
What to do: Stop in a safe place and have a dealer check the vehicle immediately. Do not turn off the engine if stopping temporarily. PDF page 692

Malfunction Indicator Lamp

Comes on for an engine emissions control problem; blinks when engine misfiring is detected.
What to do: If on, avoid high speeds and see a dealer immediately. If blinking, park safely away from flammables and wait 10+ minutes with engine off. PDF page 692

Low Tire Pressure/TPMS Indicator

A tire pressure is significantly low or TPMS is uncalibrated. Blinking about a minute then staying on indicates a TPMS problem.
What to do: Drive carefully, stop safely, set tire pressure to spec, then calibrate TPMS. If it blinks then stays on, see a dealer soon. PDF page 696

Adaptive Cruise Control (ACC) Interval Indicator

Comes on when the Adaptive Cruise Control indicator comes on. PDF page 108

White: information

Lane Keeping Assist System (LKAS) Indicator (White/Green)

White when you press the LKAS button; green when LKAS is operating. PDF page 108

Cruise Mode Indicator (White/Green)

White when you switch to cruise mode; green when a cruise control speed is set. PDF page 108

Summarized in our own words from the 2026 Honda Civic Sedan owner's manual (AI-assisted; every light name was matched against its cited page 2026-10-18). Your vehicle may not have every light, and other years can differ. A red warning that stays on usually means stop safely and check: your manual has the final word.