× 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 January 2007

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 Mazda Protege DX 1.5L Poor Idle Quality, Stall, MIL Lamp on VIN: JM1BC1414V
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Lack Of Activity. hello everyone, need some help w/this mazda. came into the shop as a rough idle & stall espically when warm. once @ operating temp idle hunts up & down between 300-800rpm (give or take)& most of the time stays running but sometimes stalls. when veh...
January 17, 2007