Question about Mercedes-Benz E320
Sometimes all it takes is to remove the fuel fill cap, wipe the gasket with a clean cloth and reinstall tightly...if there is an air leak the engine light will come on as the "pressure balance" in the fuel system is upset. a bad gasket will do the same thing
Posted on Apr 16, 2014
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Posted on Jan 02, 2017
you have to take it to a shop to have it reset. if it tripped, it means something isn't working right, and that often leads to lower gas mileage if it isn't fixed, costing more money in the long term
Posted on Jan 24, 2009
Try to remove positive baterry terminal for 20 minutes and install it nack. That will reset your ECU and it will run little rought tilll learn new change in 02 sensor.
Posted on Feb 20, 2010
It could be as simple as a loose gas cap. The best way to find out is to check the codes stored in the PCM. The code with give you an idea what is causing the problem. If you don't have a tester to read codes you'll have to go to a repair shop, the dealer or a part store like Autozone.
Posted on Jun 19, 2011
I'm probably not going to be able to give you a proper diagnosis without knowing which codes are setting the check engine light. There are about 300 problems that can set the light. Most common thing for your vehicle with not running bad is what they call the DPFE (differential pressure feedback) sensor. It's basically a vacuum/pressure monitor for the EGR system and they get stopped up or corrode as they have exhaust gases running through them and are made from aluminum or plastic. If you post code numbers (go to advance or autozone and they will read them for free) and I can give you a better idea of what the problem is.
Posted on Jun 19, 2011
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