P0420 on SUBARU OUTBACK
What P0420 Means on Your SUBARU OUTBACK
Real SUBARU OUTBACK Owner Reports (Source: NHTSA Complaints Database)
"P0420 code o2 sensors. i had this problem back in 2017. cruise, skid control, brake light and check engine light come on. subaru said it was the catalytic converter, 02 sensors and associated piping. subaru replaced it for free in 2017."
"The contact's girlfriend owns a 2012 Subaru Outback. The contact stated that the vehicle hesitated while starting. In addition, the contact attempted to jumpstart the vehicle; however, the vehicle failed to start. The check engine warning light was intermittently illuminated."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of P0420 on SUBARU OUTBACK
Percentages based on NHTSA complaint component analysis for this vehicle.
Complaint Trend by Year
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50-$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.