P0420 on KIA SPORTAGE
What P0420 Means on Your KIA SPORTAGE
Real KIA SPORTAGE Owner Reports (Source: NHTSA Complaints Database)
"During all of the 5 incidents in 2009 the engine misfired violently. at times 35mph was max speed. cronin kia had my vehicle over 30 days in 5 visits in 2009. they have replaced; two cat. converters, the ignition coil pack and spark plugs, a leaking fuel injector and associated wiring."
"The vehicle has had recurring drivability problems since at least June 2024, including repeated check engine light illumination and severe loss of acceleration."
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 KIA SPORTAGE
Percentages based on NHTSA complaint component analysis for this vehicle.
Complaint Trend by Year
What To Do Next
-
1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if your vehicle is covered.
-
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.
-
3
Compare repair quotes
Get 2-3 quotes. Dealer vs independent shop prices often differ 30-50% for the same repair.