Is this the only code that shows up for you? If there are others, let me know what they are. Also, how long after the new converter did the code return?
The code indicates the converter is operating below the threshold. There are things that can damage a converter such as a rich fuel mixture, a misfire, a damaged exhaust system, contaminants in the fuel, and so on. Also, the downstream oxygen sensor should be checked.
Here is what I need. First, do you have a live data scan tool? If you do, reconfirm there are no additional codes. If there aren't, check the engine coolant temperature sensor when the engine is cold. The signal should be close to ambient temp. Next, check the short-term fuel trims and let me know what they are. Last, with the engine running, watch the downstream oxygen sensor. It should be moving between 0.1v and 0.9v. If there is variation, the sensor is bad or if it is outside the parameters I mentioned, it needs to be replaced.
Let me know if you are able to do this. Also, let me know if you can provide the info requested and if there are any other codes.
Saturday, July 16th, 2022 AT 6:02 PM