× 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

P0156 Diagnostic Trouble Code Discussion for October 2009

Heated Oxygen Sensor (Bank 2 Sensor 2) Closed Loop Fuel Control

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 P0156
Help Request Posted
2002 Ford Windstar 3.8L MIL Lamp on VIN: 2FMZA51452
P0156: oxygen sensor b2s2 inactivity. Hi Group, this windstar sets a code PO156 oxygen sensor b2 s2, I check the sensor replaced with a known good sensor, check battery power on heater circuit and ground, also continuity on circuit 359 Gray and red wire from cavity 91 on pcm connector down to 02 s...
October 09, 2009