Why Vauxhall combo amber light on showing car with spanner in it?

The amber light on your Vauxhall Combo with the car and spanner symbol is the Engine Management Warning Light (EML). This light indicates that there is a problem with your car's engine or emissions system. It is important to have this light checked out by a qualified mechanic as soon as possible, as it could indicate a serious issue.

Here are some possible reasons why the EML might be on:

* Oxygen sensor: The oxygen sensor monitors the amount of oxygen in your car's exhaust. If the oxygen sensor is faulty, it can cause the engine to run rich or lean, which can lead to decreased fuel efficiency and increased emissions.

* Spark plugs: Spark plugs ignite the fuel in your engine's cylinders. If the spark plugs are worn out or faulty, they can cause misfires, which can lead to decreased engine performance and increased emissions.

* Catalytic converter: The catalytic converter converts harmful pollutants in your car's exhaust into less harmful gases. If the catalytic converter is damaged or clogged, it can cause the EML to come on.

* Other engine problems: There are a number of other engine problems that can cause the EML to come on, including:

* Vacuum leaks

* Fuel injector problems

* Engine overheating

* Transmission problems

If the EML is on, it is important to have your car checked out by a qualified mechanic as soon as possible. The mechanic will be able to diagnose the problem and make the necessary repairs.