If your Nissan is experiencing a P0139 error code, this video is for you. We’ll provide two practical solutions to fix the error code right at home.
Firstly, use the Zeus app to scan your vehicle and identify the error code P0139. This code indicates that the powertrain control module has detected a potential issue with the signal from the rear oxygen sensor on bank one.
Method A: Fuel Injectors
The fuel injectors are located in the intake manifold and are responsible for spraying fuel directly at the intake valves. Start by inspecting the fuel injectors on the fuel rail for any leaks. When replacing them, ensure that the new injector comes with new seals and do not reuse the old ones. It’s important to change all the fuel injectors as a set to maintain engine performance. To prevent leaking, dip the new fuel injector into gasoline before installation.
Method B: The Oxygen Sensor
The oxygen sensor is typically located after the catalytic converter, with sensor number two being the downstream oxygen sensor behind the converter. Check the electrical connections, wire harness, and metal tabs for any damages. If any issues are found, replace the oxygen sensor.
After performing the repair, use the Zeus app to clear the error code and rescan your vehicle to ensure everything is functioning as expected.
For more information and to claim a free engine code scanner, visit the link in the description below. Feel free to leave any questions in the comments, as our mechanics will be happy to assist you. Thank you for watching!
What does the P0139 error code indicate in a Nissan vehicle?
The P0139 error code indicates that the powertrain control module has detected a potential issue with the signal from the rear oxygen sensor on bank one.
What are the practical solutions to fix the P0139 error code in a Nissan vehicle?
There are two practical solutions. Method A involves inspecting and replacing leaking fuel injectors, ensuring new seals are used, and dipping the new fuel injector into gasoline before installation. Method B involves visually checking and replacing the oxygen sensor if any damages are found on its electrical connections, wire harness, or metal tabs.
How can the error code be cleared after the repair?
After the repair, the zeus app can be used to clear the error code and rescan the vehicle to ensure everything is functioning properly.