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Wonderinf if I change the o2 sensor prior to the cat converter is a good idea.  No clue on the other 2 codes.

 

Mercedes Benz is really expensive around here.  Ideas on causes for these codes?  Would love to fix this myself.

 

Thanks

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Try erasing all the codes first.  It is possible that there is an intake leak or the Mass Air Flow sensor is bad or dirty. Check for intake leaks, if there are no leaks, clean the mass air flow sensor and replaced the air filter.

P0410: https://www.autocodes.com/p0410.html

P0105: https://www.autocodes.com/p0105.html

P1519: https://www.autocodes.com/p1519.html

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