Help needed with WRX

[austintnh]

Hi there,

I am seeking some help with my 2020 Subaru WRX with 67K miles. I'd consider myself a YouTube mechanic, but nothing past that. I recently experienced some rough idling and significant power loss while driving. No CEL or anything like that. Fearing it was the cat, I ended up testing the catalytic converter with a back pressure tester. Everything tested fine.

I put in new spark plugs and ignition coils and that seemed to resolve the idling and power loss. Currently there are no CEL. The car is driving fine, but when I test with a FIXD OBD scanner it shows the following errors:
- P0031 (Sensor Heater)
- P0095-01 (Intake Air Temp. Sensor 2)
- P0094-A1 (Fuel System Leak)
- P0054-22 (H02S Heater Resistance Bank 1)
- P0090-11 (Fuel Pressure Regulator Control Circuit Malfunction)
- P0090-12 (Fuel Pressure Regulator Control Circuit Malfunction)
- P009014 (Fuel Pressure Regulator Control Circuit Malfunction)
- P00D5 (H02S Sensor Correlation Bank 1)

Does anyone have any ideas on what the issue could be?

I should have scanned before the spark plug/coil change but I didn't even think about it so I am unsure if these codes that appeared after the change or if they were present before.

Any help would be greatly appreciated!

 

[bmart]

Bad fuel?

 

[austintnh]

Bad fuel?

Maybe?

I don't drive the car very often. The last time I filled up was from a KentKwik (A chain popular in Texas) about a month ago. I usually get my fuel from there for both my personal and work vehicles and haven't had any issues yet. I have less than a quarter of a tank, so I'll try to run the tank down and fill it up with fuel from a different station.

 

[bmart]

Water sinks. I get fuel with water on most fillups.