× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: I guess I don't understand Mercedes EGR monitor theory
Posted to Technical Discussion Forum on 2/25/2021 4 Replies

[...trimmed text...]

Well this car had a split at the end of the hose going to the MAP behind the secondary air pump. Still had enough vacuum to be within MAP parameters and not set lean codes but not to satisfy the EGR ... Login to read more.

4 Replies Received (View Replies)