There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
The 2004 Volkswagen Passat has an inline 4 engine.
The 2004 Volkswagen Passat has a 1.8 L base engine size.
The 2004 Volkswagen Passat's engine produces 170 hp @ 5900 rpm.
Check stop light switch for misadjustment or defect
The 2004 Volkswagen Passat's engine produces 166 ft-lbs. @ 1950 rpm.
The check engine light in a 2004 Toyota Tacoma can come on for many reasons. It could indicate an exhaust leak or a problem with the engine.
A flashing check engine light is an indication of a misfire.
Here a answer maybe CHECK THE ENGINE:) the light will go off
I have driven a 2004 passat wagon that apon acceleration the car jolted and vibrated. Turns out the problem was the engine had a rod knocking and pretty much a bad engine, this could have been caused by a water pump or a oil pump not working. I would have a mechanic check it out right away.
When resetting the check engine light on any vehicle after a repair, a diagnostic tool is recommended. A simpler way requires disconnecting the battery from the vehicle for 5 seconds, unfortunately this will reset the radio as well.
Reset the Check Engine Light by disconnecting the battery for about 10 minutes.
The check engine light has nothing to do with an oil change. The check engine light is reset with a scan tool after repairing the failure that caused it.