× 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: 2012 focus will not complete o2 monitors
Posted to Emissions Forum on 1/17/2013 1 Reply

A slight vacuum reading of the fuel tank pressure sensor can cause a suspension of the O2 sensor monitors. Compare the fuel tank pressure value to a known good. The reading will vary depending on your elevation, but should be around 2.5V KOEO, gas cap off.

I... Login to read more.

1 Replies Received (View Replies)