Replacement Guide / Toyota / Corolla / 2004
Replacement guide
2004 Toyota Corolla
Owner-reported component and symptom data for this model year.
What are you trying to fix?
Replacement-related components reported for this vehicle
11 owner reports involving the catalytic converter
View replacement guide7 owner reports involving the power window regulator
View replacement guide3 owner reports involving the headlights
View replacement guide1 owner report involving the battery
View replacement guide1 owner report involving the fuel injector
View replacement guide1 owner report involving the egr valve
View replacement guide1 owner report involving the wheel bearing
View replacement guide1 owner report involving the ignition coil
View replacement guide1 owner report involving the throttle body
View replacement guideBrowse by system
Fuel / engine
- Catalytic converter — 11 owner reports
- Fuel injector — 1 owner report
- EGR valve — 1 owner report
- Ignition Coil — 1 owner report
- Throttle Body — 1 owner report
About this data
Component evidence comes from structured complaint categories and reviewed component mentions in complaint summaries. Owner-situation evidence comes from reviewed symptom language in complaint summaries. Reports are signals, not diagnoses.
How to read the counts
Counts are distinct owner reports involving a canonical component. They are not a failure rate, probability, or share of vehicles sold. A complaint involving a component does not prove that component caused the problem. Parent NHTSA system buckets are not counted as the part itself.