P0303 on HONDA CIVIC
What P0303 Means on Your HONDA CIVIC
Real HONDA CIVIC Owner Reports (Source: NHTSA Complaints Database)
"Driving on highway to work when check engine light came on in addition to "Emissions System Problem", "Hill Start Assist", "Power Steering Issue", etc. When scanned for codes it showed misfire codes P0300, P0301, P0302, P0303, P0304."
"The contact owns a 2018 Honda Civic. The contact stated while driving approximately 20 MPH, several unknown warning lights illuminated and the vehicle started to idle very rough. The contact had taken the vehicle to a local dealer however, the vehicle was not diagnosed."
Data from NHTSA Vehicle Complaints Database. All reports are filed by vehicle owners directly with the U.S. Department of Transportation.
Common Causes of P0303 on HONDA CIVIC
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.