× 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

P1271 Diagnostic Trouble Code Discussion for January 2011

Air Fuel Sensor (Bank 1 Sensor 1) Circuit No Activity

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 P1271
Help Request Posted
2001 Ford F-250 Super Duty XLT 7.3L Poor Idle Quality, Cuts out, Misfire VIN: 1FTNX20F91
P1271: Cylinder 1 - High To Low Side Open Detected. Help ford tech's... This truck came to me from another shop who replaced the idm and both valve cover gaskets. Customer stated he wanted #7 and #1 injectors replaced because everything he had done prior pointed to them being the problem. I replaced them with n...
January 04, 2011