Home› Symptoms› Engine Warning Light
UK Vehicle Symptom Guide
A flashing engine light needs attention today — a solid light needs diagnosing soon

Engine Warning Light On?

That orange engine symbol appearing on your dashboard means your car's computer has detected a fault and stored a code. But what that fault actually is — and how serious it is — depends entirely on your vehicle.

🔍 Find Out What's Wrong With My Car →
⚡ 60 seconds
💷 £1.99 one-time
🔒 Secure checkout
The Problem

The Light Is a Warning, Not a Diagnosis

The engine warning light is one of the most misunderstood things in motoring. It doesn't tell you what's wrong — it tells you something has been flagged. The same light can be triggered by dozens of completely different faults, ranging from a loose fuel cap to a serious engine issue.

🚨
If the light is flashing rather than on solid, this indicates an active fault happening right now — not a historical one. Ease off the throttle and avoid hard acceleration until it's been diagnosed.
Why It Matters

Don't Guess — The Wrong Fix Costs More

⚠️ This symptom could mean several different things
💡
The same warning light can be triggered by dozens of completely different faults
🚗
The most likely cause depends heavily on your vehicle's make, model, age and mileage
💷
Costs range from under £20 to over £1,000 — knowing the cause first prevents wasted spend
⚠️
A flashing light and a solid light are very different in urgency — your report explains both
Your Personalised Report Includes

What's Causing It — Specific To Your Car

The exact cause depends on your make, model, year, mileage and full symptom picture. Your MotorLoom report identifies the most likely faults for your specific vehicle — ranked by probability.

🔒 Unlocked after payment — £1.99
Your Personalised Diagnosis Includes:
Most likely fault(s) stored for your vehicle type and symptoms
🔒
Whether it's safe to keep driving or needs immediate attention
🔒
UK repair costs — independent garage vs main dealer
🔒
What the fault code range means for your specific car
🔒
Questions to ask a garage before authorising any diagnostic work
🔒
Full MOT risk — an active engine light is an automatic failure
🔒
Specific to your exact vehicle · Delivered in under 60 seconds
Personalised Diagnostic Report

Find Out Exactly What's Wrong

Tell us about your vehicle and symptoms. We'll identify the most likely causes and tell you what it should cost to fix — before you go anywhere near a garage.

Likely causes ranked by probability for your car
UK repair costs — independent garage & main dealer
Urgency rating — safe to drive or act now?
MOT risk assessment
Word-for-word questions to stop garages overcharging
Printable report to take with you
£1.99
One-time · No account needed · No subscription
🔓 Get My Report — £1.99 →
FAQ

Common Questions

It depends entirely on the cause. A solid light may be safe to drive on short-term; a flashing light means something active is happening and you should ease off. Your report includes a specific urgency rating for your vehicle.
Yes — an illuminated engine management warning light is an automatic MOT failure. It needs to be resolved and the light cleared before your car will pass.
You can clear a fault code, but if the underlying fault is still present the light will return. Clearing without fixing is not a solution — and the stored code is actually useful information for your diagnosis.
The range is enormous — it depends entirely on the fault. Your report gives you a realistic UK cost expectation before you visit any garage.
Related Symptoms

Also Worth Checking

💥
Engine Misfiring
📉
Losing Power
⚡
Car Jerking
🔍
Run Full Diagnosis