How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Marty Your Own Question
Marty
Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53166
Experience:  Bosch Certified Master Tech. Over 35 years experience.
13230946
Type Your Mercedes Question Here...
Marty is online now
A new question is answered every 9 seconds

I have a w220 2000 model with a fault code p1520 engine

Customer Question

I have a w220 2000 model with a fault code p1520 engine would start then dies
Submitted: 1 year ago.
Category: Mercedes
Expert:  Marty replied 1 year ago.
Hi, a P1520 code is not a valid Mercedes fault code. A generic scan tool must have been used to read the fault codes. If the motor starts and dies the problem could be a bad key or a bad ignition switch. Step 1 is to try another key. If you still have trouble you may need to replace the ignition switch but before you do that I would get the car connected to a factory level scan tool to get an accurate reading of the fault codes. Some other possibilities that come to mind are a bad mass air flow sensor or an air intake leak or loss of fuel system pressure.
Let me know if you have any questions.
Marty

Related Mercedes Questions