Subaru Common Problems & OBD2 Codes
Complete repair database for all Subaru models. NHTSA complaint data, OBD2 code guides, and DIY cost comparisons.
Browse by Model
Outback
2000-2024
Forester
2000-2024
Impreza
2000-2024
Legacy
2000-2024
Crosstrek
2000-2024
WRX
2000-2024
Ascent
2000-2024
BRZ
2000-2024
Most Common OBD2 Codes for Subaru
P0325
Knock Sensor Circuit Malfunction (Bank 1)
DIY: $20-$80
P0420
Catalyst System Efficiency Below Threshold (Bank 1)
DIY: $150-$400
P0442
Evaporative Emission Control System Leak Detected (Small Leak)
DIY: $10-$50
Free DIY Maintenance Schedule by Mileage
Never miss an oil change, filter, or fluid flush. Printable PDF for your glovebox.
✓ Check your email!
No spam. Unsubscribe anytime.