If you are a Honda driver and your vehicle is showing a PO139 error code, this video is for you. In this article, we will walk you through two practical solutions to fix the error code right at home.
First, 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 crucial components mounted in the intake manifold to spray fuel directly at the intake valves. To address the PO139 error, inspect the fuel injectors on the fuel rail for any leaks. If necessary, carefully remove the fuel injector and ensure that the new injector has new seals. It is important never to reuse the old seals when changing the fuel injectors. Changing all the seals as a set is essential to prevent the engine from running unevenly. To avoid leaking, wet the new fuel injector seals with gasoline before installation.
Method B: The Oxygen Sensor
The oxygen sensor is located after the catalytic converter, with bank one being on the side with cylinder number one. Sensor number two is usually the downstream oxygen sensor behind the converter. Visually check the oxygen sensor’s electrical connections, wire harness, and metal tabs for damages. If any damages are found, replace the oxygen sensor.
After completing the repair, use the Zeus app to clear the error code and rescan your vehicle to ensure everything is functioning properly.
For cost-saving on car expenses, claim a free engine code scanner at the link provided in the description or refer to the video for more information. Feel free to leave comments, and our mechanic professionals will respond shortly.
What does the error code PO139 indicate for Honda vehicles?
The error code PO139 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 PO139 error code in Honda vehicles?
There are two practical solutions to fix the PO139 error code in Honda vehicles. Method A involves inspecting and replacing the fuel injectors, and Method B involves inspecting and replacing the oxygen sensor located after the catalytic converter.
How can I ensure proper replacement of fuel injectors in Honda vehicles to fix the error code PO139?
When replacing fuel injectors in Honda vehicles to fix the PO139 error code, it’s important to carefully remove the fuel injector, ensure the new injector has new seals, never reuse old seals, change all injectors as a set, and prevent leaking by wetting the new fuel injector’s seals with gasoline before installation.
Where can I get a free engine code scanner for Honda vehicles?
To save money on car expenses, you can claim a free engine code scanner at the description link in the video or check out the provided video for more information.