Causes and meaning of the VW check engine light
In some ways the check engine light is the most obvious one to diagnose, as far as which part it’s pointing to as a problem. You see a bright exclamation point light up your dash and you aren’t likely to identify the issue just by taking a look at the symbol (there are at least three different ones, indicating problems with brakes, the automatic transmission or the tires), but at the same time a light that suggests an engine problem is easily more terrifying. As it turns out, some of the causes of the VW check engine light aren’t always as awful as the dashboard light indicates, and the meaning behind it is varied.
Most common reasons your Volkswagen check engine light is on
The reality of the situation is the reasons behind a check engine light have to do with the exhaust system and things that interfere with this system are numerous. These are just a few of the top problems you could be facing when you see that flowing yellow engine:
- Faulty oxygen sensor
- Missing gas cap
- Catalytic converter
- Faulty airflow sensor
- Worn spark plugs
- Thermostat isn’t working properly
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Your Volkswagen check engine light has come on for a reason, so naturally the best way to turn it back off is to fix the problem. If you believe the issue to be settled and the light still is on, the best way to turn it off is the same way you found out the problem to begin with, through the use of an ODBII diagnostic tool or VCDS. The light isn’t designed to be turned off it any other way, though things like disconnecting the battery often turn off lights temporarily.
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Of course, the ideal way to find out what’s actually causing your check engine light is through the use of a diagnostic computer to pull the codes that are triggering the lights. Naturally, we can perform this task for you, so if you’re not sure why you’re Volkswagen check engine light is on, stop by the Findlay North Volkswagen service center or a dealership near you. Also be sure to check back here at our dealership blog for more helpful posts on VW features and fixes.