× 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 December 2008

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
2002 Mazda Protege DX 2.0L Poor Idle Quality, Cuts out, MIL Lamp on VIN: JH1BJ22622
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Lack Of Activity. when i start the car the o2 readings will both drop very low. ie. sensor 1 at 0.035 sensor 2 at 0.100. i smoke tested it. fuel pressure is in range. monotored scan data, coolant and intake air temp are within range. thottle position sensor sweeps ok. mass air ...
December 05, 2008
2003 Isuzu Rodeo Sport S V6 3.2L Poor Fuel Economy, MIL Lamp on VIN: JAACL11LX4
P0140: Heated Oxygen Sensor (Bank 1 Sensor 2) Insufficient Activity. Brought to my shop with blown engine, I replaced engine with used engine. Check engine light on immetiadtely after engine start. clear codes and they return every time. The o2 harness runs under the intake manifold and has to be removed with the engine so all ...
December 17, 2008