× 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

P0140 Diagnostic Trouble Code Discussion for September 2006

Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient 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 P0140
Help Request Posted
1997 Ford Aspire 1.3L MIL Lamp on VIN: KNJLT06H2V
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) No Activity Detected. Code P0140 - B1S2 sensor low activity. Scanned it and found voltage fixed at 1.25V. Disconnected sensor and voltage went to about 6V on scanner, voltmeter attached to harness connector agrees. Disconnected computer with O2 still disconnected and voltage jumps ...
September 21, 2006