A dashboard warning light means something different depending on which light it is, what colour it is, and whether it's flashing or staying on — there's no single meaning that applies to every warning light on every car. What you can go on straight away, even before you know exactly which light it is, is colour and behaviour, because those tell you how urgent it is.
What does this warning light on my dashboard mean?
It depends on the specific light and the specific car, which is exactly why a general answer can only tell you how to read the colour and behaviour, not name the fault for you. Anyone who tells you what's wrong from a description of "a light came on" alone is guessing.
Does the colour of the light actually matter?
Yes — red and amber are used differently. A red warning light is telling you something close to what a dangerous fault at an MOT test tells you: the car shouldn't be driven until it's been looked at. An amber light is more often a "get this checked soon" signal, closer to how an MOT advisory works — it isn't a failure, but a note that something will need attention before long.
Does it matter if the light is flashing or staying on steadily?
Yes, and it's often a bigger clue than the colour on its own. A light that's flashing is generally more urgent than the same light showing steady. If a light starts flashing while you're actually driving, the safest thing is to find somewhere safe to stop rather than carry on and hope it settles down.
Can I look up what a specific light means myself?
Your vehicle handbook is the most reliable source for what a specific symbol means on your specific car, because manufacturers don't all use the same symbol the same way. If you no longer have a paper copy, most manufacturers publish handbooks online against the registration or model, and it's worth five minutes to check before you decide a light is nothing to worry about.
Should I keep driving with a warning light on?
As a safe default: red or flashing means stop and get it checked before relying on the car for a longer journey. Steady amber can usually wait a short while but shouldn't be ignored for weeks. It's the same principle the MOT test itself works on — a dangerous fault means the car must not be driven, while an advisory is something to deal with before it becomes a problem, not an emergency.
What should I do next if a warning light won't clear?
Book it in rather than keep driving on it and hoping it clears itself, especially once it's been on for more than a few days. Every service at ONEFIX in Wrexham includes a full written digital vehicle health check with photographs, so whatever's triggering the light gets identified and shown to you, not guessed at — and you'll get a price in writing before any work is carried out, so having it checked costs you nothing but the visit.
Why can't a general guide just tell me what my light means?
Because getting it wrong would be worse than not answering. A page that guessed at a cause from a colour alone would be doing exactly what a good mechanic won't do over the phone — naming a fault before anyone's actually seen the car. What this page can do honestly is tell you how urgent it looks and what to do about it; what an inspection can do is tell you what it actually is.