Your Engine Warning Light Is On — What It Means and What to Do
8 July 2026 · 4 min read
Solid versus flashing engine lights
A solid engine light means a fault code has been stored. The car is usually driveable, but you should get it checked soon. A flashing light is more serious — it means the engine is misfiring or a component is failing RIGHT NOW. If the light is flashing, stop driving and get a tow.
Do not ignore either one. A diagnostic scan will tell us what the issue is and whether it is urgent.
Common causes of engine lights
Engine lights can point to anything from a loose fuel cap to a faulty oxygen sensor, a coil pack failing, a catalytic converter issue, or an ignition system fault. Without a scan, you are guessing. We use professional diagnostic equipment to read the fault code and live data, then advise on the repair.
The diagnostic process
We connect a scan tool to read the fault code, clear any stored codes, and then run a test drive to see if the code returns. We also look at live sensor data to confirm whether the sensor or the component it monitors is actually faulty. This approach means you do not pay for a new part you do not need.
Get your light checked in Oldbury
Engine lights are one of the most common jobs we handle. Call us on 0121 544 3736 and describe the light and any symptoms — rough running, poor fuel economy, slow acceleration, or unusual noises. We will advise on urgency and book you in as soon as possible.
Need help with your car?
Call RH Auto Engineering for clear advice and a fast booking.
Call 0121 544 3736