Join Now
International Automotive Technicians Network

P0139 Diagnostic Trouble Code Discussion for February 2012

Heated Oxygen Sensor (Bank 1 Sensor 2) Slow Response


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 P0139
Help Request Posted
2005 Acura EL 1.7L MIL Lamp on VIN: 2HHES358X5
P0139: Hego sensor B1 sensor 2. ... hego installed in position 2 downsteam or cat monitor sensor. The Mil illuminates after about 50 km with code P0139 [slow switching]. Has anyone run into problems with aftermarket sensors causing this in Hondas? or do I have a convertor issue? The original...
February 15, 2012
2005 Acura EL 1.7L MIL Lamp on VIN: 2HHES358X5
P0139: Hego sensor B1 sensor 2. ... hego installed in position 2 downsteam or cat monitor sensor. The Mil illuminates after about 50 km with code P0139 [slow switching]. Has anyone run into problems with aftermarket sensors causing this in Hondas? or do I have a convertor issue? The original...
February 15, 2012