× 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

P1400 Diagnostic Trouble Code Discussion for February 2014

Cold Start Emission Reduction Control System

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1400
Help Request Posted
2007 GMC Envoy SLE 4.2L Poor Idle Quality VIN: 1GKDT13S77
P1400: Cold Start Emission Reduction Control System. sit overnite and start up in morning cold start up idles rough and code comes back after clearing.runs great otherwise.my scanner is showing a possible o2 sensor primary the heated one but need voltage values cold and warm.flashig cat,air eva and o2 sensor the...
February 24, 2014