Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Can you please recheck the fault code you are listing, I am not seeing any reference to a 505, all engine codes should be 4 digits starting with a P. Check the code for ma and post back with the results and we can work from there.