× 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

P0139 Diagnostic Trouble Code Discussion for March 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
2003 Hyundai Elantra GLS 2.0L noisy decel VIN: KMHDN45DX3
P0139: rear 02 slow response. pick up car from use car lot for smog and no light when i picked it up. try to smog notice misfire monitor ok fuel not ok(what the hell) ccm ok. Never seen this before,I thought these run all the time when car is running. I drove it and now check engine light ...
March 12, 2012