× 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

P0138 Diagnostic Trouble Code Discussion for August 2009

Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage

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 P0138
Help Request Posted
1999 Infiniti G20 2.0L MIL Lamp on VIN: JNKCP11A3X
P0138: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Input (Rich Shift). ... was a straight forward repair, kicking my butt. Came in with P0138. Which sets when the rear o2 does not go above .480 volts. With the original sensor it starts at .290 volts and slow went to .240 volts and only fluctated to maybe .260 volts. Checked readi...
August 10, 2009
1999 Jeep Wrangler Sport 4.0L Poor Idle Quality, Surge, MIL Lamp on VIN: 1J4FY19SXP
P0138: Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage. ... front o2 sensor replaced. came back a week later light on, code for rear sensor, which had been replaced 8 months previous. Replaced rear again. Came back light on, code p0138. Customer has been too busy until now to brin...
August 31, 2009