Over 100 different reasons.
Warning lights come on when there is a problem. An Engine management light comes on when there is a problem within the engine, that may cause problems later.
To troubleshoot an engine management light on a VW Golf a diagnostic light is recommended. The test will display any malfunction codes it reads from the engine computer.
There are many reasons why the management light will come on, you will have to have the car scanned at a repair shop, the fault code that made the light come on will be stored in the engine control module, and this can be decoded by and any good shop with the correct equipment
The warning light will not come on because you have a separate oil gauge on the Ford Focus. This is the gauge that you should watch and it will show you that you are low on oil; do not rely on the check engine light to alert you of it.
disconnect battery for 15 mins...if it come back on there is a reason for the light being on...if so google vectra management light paperclip...hope this helps
ÊYour engine light can come on for many reasons. It is best to check with a code reader and see exactly why it has come on. It could be the fuel emissions or a cracked cylinder.
The check engine light comes on when the computer has detected a problem with the emissions system. The engine maintenance light comes on when the engine needs some scheduled maintenance such as an oil/filter change.
Yes it could if you pulled a fuse that fed any part of the engine management system.
Not likely but it is possible.
No, the check engine light does not come on because your gas is half way full. The check engine light will come on if there is a problem with the engine.
When the ignition key is turned to the run position just before starting the vehicle the check engine light should illuminate for a few seconds to prove that the bulb works
Probably an O2 sensor has worn out. You can take your vehicle to an AUTOZONE store and have the codes read for free. This will pinpoint the check engine light problem.