Warning Lights Guide · Reviewed Oct 3, 2026
Dashboard Warning Lights: Color Guide and What to Do (2026)
Start with the color. Red means stop safely, amber means service soon, and green or blue means a system is on. Then match the symbol using the table below.
By Alan Williams, independent AMSOIL Dealer since 2004, Tomball, TX
What do dashboard warning light colors mean?
Red: serious, pull over safely and stop the engine. Amber or yellow: have it checked soon. Green or blue: a feature is on.
A flashing check engine light is more urgent than a steady one.
The color code
| Color | Meaning | What to do |
|---|---|---|
| Red | Serious problem or safety issue | Stop safely and turn off the engine. Do not keep driving. |
| Amber / yellow | Something needs attention | Drive carefully and book a check soon. |
| Green / blue | System is on (headlights, cruise) | No action needed. |
Common warning lights
| Light | Usual color | What it usually means |
|---|---|---|
| Oil pressure (oil can) | Red | Low oil pressure. Stop and check oil. See low oil pressure. |
| Engine temperature | Red | Overheating. Stop and let it cool. |
| Battery / charging | Red | Charging system fault. Battery may die soon. |
| Brake system | Red | Parking brake on, low fluid or brake fault. |
| Check engine | Amber (flashing = urgent) | Engine or emissions fault. See how to handle a check engine light. |
| ABS | Amber | Anti-lock brakes fault. Normal brakes still work, but have them checked. |
| Airbag / SRS | Red or amber | Airbag system fault. Get it inspected. |
| Tire pressure (TPMS) | Amber | One or more tires low. Check pressures. |
Symbols and colors vary by vehicle, so check your manual. Several lights at once often point to an electrical or charging problem.
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What to check first
- Note the color and symbol.
- For oil or temperature lights, stop and check the level (see how to check engine oil).
- Confirm the parking brake is released if the brake light is on.
- Do not clear a light before you know why it came on.
- Book a diagnosis. Noises can help too, see engine noises.
Warning lights FAQ
Can I drive with the check engine light on?
If it is steady and the car runs normally, you can usually drive to get it checked soon. If it flashes, stop.
What does the red oil light mean?
Oil pressure is dangerously low. Stop safely and check the oil level.
Why are several warning lights on at once?
Often a low battery or charging fault. Have the charging system tested.
What does a flashing check engine light mean?
A more urgent problem, often a misfire. Reduce load and get it checked.
Can warning lights fail an inspection?
In some places ABS, airbag or check engine lights can. Check local rules.
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Sources (checked Oct 3, 2026): U.S. News: dashboard warning lights · Kelley Blue Book: warning lights explained · Gearhead Grove: dashboard symbols
AMSOIL is a registered trademark of AMSOIL INC. LubeOilSales.com is operated by Alan Williams, an independent AMSOIL Dealer (Dealer #1243776), and is not owned or endorsed by AMSOIL INC. If you join through my links, I may earn a commission at no extra cost to you. This guide is general information. Follow your owner’s manual and consult a qualified professional when in doubt. Content last reviewed October 3, 2026.