Check Fuel Cap Light

Dashboard Warning Lights Caution (amber)

Can you still drive? Yes, normally

Who can fix it? You can fix it yourself

Typical repair time 5 minutes – 1.5 hours

Typical cost SAR 40 to 700

What it means

Shown as a fuel pump or filler neck with a cap beside it, usually amber or as a text message, this light means the fuel vapor (EVAP) system has detected a leak, most often because the fuel cap is loose, not closed or damaged. It is not a danger to the engine, but it can cause a fuel smell and vapor loss, and the check engine light may come on if it continues. On most cars it does not glow at key-on unless there is a problem.

Symptoms3

The light or message appears shortly after refueling.
A slight fuel smell near the filler.
The check engine light comes on if the leak is not fixed.

Possible causes5

Fuel cap not tightened properly after refueling (most common).
Cap left at the station or a non-matching cap fitted.
Cracked cap seal or damaged cap.
Damaged or rusty filler neck opening that will not seal.
Leaking hoses or valves in the fuel vapor (EVAP) system (less common).

How to diagnose5

Remove the cap and refit it until it clicks, or as your car requires.
Inspect the rubber seal and the filler neck opening for cracks or dirt.
Drive for a few days; most cars need several drive cycles before the light goes out.
If the light stays on or the check engine light appears, have the codes read at a workshop.
At a workshop: smoke test the EVAP system and check the vent and purge valves.

How to fix5

Tighten the cap properly after every refuel.
Replace the cap with an original or matching part.
Clean or repair the filler neck opening if damaged.
Repair the leaking hose or valve in the EVAP system.
Clear codes and confirm the light stays off after several days of driving.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

In Saudi riyals; the highlighted part is the expected range for this fault.

Tightening or replacing a cheap cap usually solves it; the cost rises for a filler neck repair or an EVAP valve.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

I tightened the cap but the light is still on. Why?

Most cars need several drive cycles to rerun the test and turn the light off. If it stays on after a few days, check the cap itself or have a leak test done.

Is it dangerous to drive with this light on?

It usually does not affect how the car drives, but fix it to avoid vapor loss and fuel smell, and because it can hide another fault behind the check engine light.

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This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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