What does it mean when the engine light is yellow?

A yellow engine light (check engine) means the engine control system has detected a fault that needs attention. The car can usually still be driven, but you should book a diagnosis as soon as possible to avoid bigger damage.

Can I drive when the engine light is on?

If the light is steady yellow you can usually drive short distances, but book a workshop within a few days. If the light flashes, the fault is more serious – stop and tow the car to the workshop.

What does it cost to diagnose the engine light?

We do a quick and affordable fault-code read at the workshop. Call 031-395 12 00 for the current price and to book a time.

What are the most common causes of the engine light?

Common causes are: faulty fuel cap, lambda sensor, ignition coil, spark plugs, charge-air hose or exhaust system. With modern diagnosis equipment we find the fault quickly.

Can the engine light turn off by itself?

Yes, if the fault is temporary (e.g. bad fuel or a half-closed cap) the light may turn off after a few starts. If it comes back on, let a workshop do a proper check.

Why is the engine light on?

The engine light (check engine) can turn on for many reasons – from a simple fuel-cap issue to more serious problems in the engine or exhaust. Here we go through the most common causes and when you should visit the workshop.

Fuel cap or filler issue
Lambda sensor (oxygen sensor)
Spark plugs or ignition coil
Charge-air hose / turbo
Exhaust system and catalytic converter
Reliable diagnosis & repair in Gothenburg

When the engine light comes on, the car's engine control unit (ECU) reacts to a deviation in one of the systems. The fault is stored as a code and can be read with an OBD reader. Common causes of the engine light: 1. Faulty or loose fuel cap – easy to fix. 2. The lambda sensor measures the wrong fuel/air mix. 3. Spark plugs or ignition coil are no longer working optimally. 4. Leak in the charge-air hose or turbo problems. 5. Faulty catalytic converter or other exhaust components. 6. Faulty MAF sensor (mass airflow meter). At Däck Dax in Gothenburg we do a fast and thorough fault-code reading to find exactly what is causing the engine light. We repair the fault on-site – whether it is a simple sensor or a more complicated engine fault. Call 031-395 12 00 or book a time and we will help you right away.

Book a diagnosis – call 031-395 12 00 031-395 12 00

Frequently asked questions

What does it mean when the engine light is yellow?: A yellow engine light (check engine) means the engine control system has detected a fault that needs attention. The car can usually still be driven, but you should book a diagnosis as soon as possible to avoid bigger damage.
Can I drive when the engine light is on?: If the light is steady yellow you can usually drive short distances, but book a workshop within a few days. If the light flashes, the fault is more serious – stop and tow the car to the workshop.
What does it cost to diagnose the engine light?: We do a quick and affordable fault-code read at the workshop. Call 031-395 12 00 for the current price and to book a time.
What are the most common causes of the engine light?: Common causes are: faulty fuel cap, lambda sensor, ignition coil, spark plugs, charge-air hose or exhaust system. With modern diagnosis equipment we find the fault quickly.
Can the engine light turn off by itself?: Yes, if the fault is temporary (e.g. bad fuel or a half-closed cap) the light may turn off after a few starts. If it comes back on, let a workshop do a proper check.