P2111, P2112, Low idle, idle fluctuates
Fix trouble codes P2111, P2112, Low idle, idle fluctuates condition on Ford
Ford has issued a service bulletin #10-21-6 to address a P2111, P2112, Low idle, idle fluctuates issue with the vehicles listed below:
2010-11 Focus, Fusion, Taurus
2010 E-150, E-250, Edge, F-150
2010-11 Flex
2010-11 Lincoln MKS, MKZ
2010 MKX
2010-11 MKT
If you own one of these vehicles and experience a P2111, P2112, Low idle, idle fluctuates issue read this article. The fix applies to the 2.0L, 3.5L (without GTDI), and 4.6L (2-valve) engines. The symptoms include idle speed drops lower than desired or idle speed fluctuates. To determine if this fix applies, first find the vehicle build date
For the 2.0L engine this applies to build dates 2/11/10 thru 8/2/10
For the 3.5L engine this applies to build dates 3/1/10 thru 8/3/10
For the 4.6L (2V) engine this applies to build dates 5/7/10 thru 8/2/10
Replace the electronic throttle body with updated model
Ford has issued replacement electronic throttle bodies to correct the problem.

7T4Z-9E926-FA electronic throttle body
7T4Z-9E926FA electronic throttle body for the 4.6L engine

8S4Z-9E926-B electronic throttle body
8S4Z-9E926-B electronic throttle body for the 4.6L engine
©, 2015 Rick Muscoplat
Posted on by Rick Muscoplat