car runs without problem. now i have a code for P0138- 02 SENSOR CIRCUIT HIGH VOLTAGE BANK 1 SENSOR 2
if both your O2 sensors are the same, try swapping them and see if the code changes.
so i only have upstream sensor and downstream sensor, i removed them about 200 miles ago and cleaned them with apple cider vinegar, yep they are super clean, i installed them back with anti seize on threads. so i cant swap them? after cleaning the downstream sensor wich is sensor 2 it had white spots on the sensor surface, i guess thats from getting Hot?? iam planning to remove it again this week and clean it again, will update you how the sensor comes out! will update OBD codes dont leave ok
you can't swap them why?
Best to switch them and see if the error moves or stays in the same place.
If it switches, change out the sensor.
if it stays the same, more hunting will need to be done.
Try the above suggestions. Also, for your reference (and good resource):
https://www.obd-codes.com/p0138
ok i will try and swap them today hopefully the cables are long enough to reach