My evap valve solenoid died and check engine light came one, replaced today and the old one clearly cracked inside and rotted out, woah!
Also got myself Launch crp123x as Christmas present and was poking around various modules and data to see what it can do and decided to take a look at o2 sensors.
I periodically have o2 sensor error once in 500-1500 miles and just reset it.
Well, looking at graphs, the sensor that keeps throwing error voltage constant goes between 0.01-0.7 like crazy, while other sensors are still mostly.
I wonder if the cause is exhaust leak somewhere and sensor keeps flipping or the sensor is just dieing