Got a 2007 4.8l E70 here with code 2EF4 which is for the map thermostat.

All the components seem to be working fine, but the readings is indicating the thermostat not opening at operating temp.

When i manually activate the Tstat through our scanner, it ope...

FIX posted 6/18/2015

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle