Question

1997 Mercedes Benz E420 reading code p1580 also noise from the mass airflow sensor. What could be the problem?

Answer 1

HI there

This code means there is an issue with the throttle motor on bank 1. This could be as simple as a dirty throttle body. Here is some more info.

P1580 MERCEDES-BENZ - Throttle Motor Bank 1 Circuit Malfunction

Read more: https://www.autocodes.com/p1580_mercedes-benz.html