PO401 CODE

Question

I was getting poor running and PO401 code I had EDR value changed but code is coming up again please help

Answer 1

Hi there,

This code indicates an issue with the EGR. Here is a list of possible causes. 

P0401 VOLKSWAGEN - Exhaust Gas Recirculation Flow Insufficient Detected

Read more: https://www.autocodes.com/p0401_volkswagen.html