In mid 2020, the front passenger electronic lock wasn't working when using the key fob or the switch in the car. In pursuit of the problem, I took the door apart to assess the wiring harness. Everything looked fine, so I connected all the wires while it was apart to test the system.

It worked! I found out that there is a point where the wiring was tucked by the door handle that caused an internal wire break. The connection was restored by simply not tucking the wire. This fix has still worked to this day.

This is an ongoing repair for the car, perhaps. I received a check engine light, and a scan revealed that low catalytic converter efficiency was occurring. Although the code was persistant initially, the code was able to be erased later on and it hasn't come back. So it is fixed for now. Only time will tell fo how long it is fixed.

There are several potential casues for this code. The O2 sensor and tha actual catalytic converter are the main contributors. To begin troubleshooting, I would start with the O2 sensor. Perhaps the O2 sensor itself has given out or is dirty, or perhaps the wiring harness connecting the ECU to the sensor has a break in it. So the first action, is to read the live data of the sensor. If I can read the voltage, then the wiring harness is working. In that case, I will just purchase an O2 sensor and replace it myself. As this is a cheap and easy fix. If nothing done with the O2 sensor resolves the check engine light will I finally replace the catalytic convertor on my vehicle. Which is a costly repair, but needed to renew the inspection of the car.