gened1

Gt mine has done this Several times now. Once for a code PO420.A Low Catalytic efficeniency test was done and a converter and sensor was found operating as designed. They reset it.
Next this past Jan a PO171 lean monitor A/F sensor output was incorrect They installed a 22641AA54A Front A/F Sensor and cleared codes. No problems yet but All this after my engine was replaced due to a dealer Tech performed faulty oil change makes me not trust this car. 21000 miles on the car now.
So far all under warranty.
You would think that all the lights would not come on just the engine check light but that's the way Subaru works