The OBD-II port for the Toyota Corolla is going to be located under the dashboard and near the steering wheel. It will be a bit to the left of the steering wheel. It may be easier to access this if You get on Your knees and then lean in to the vehicle from the outside. Using this port You're going to be able to have a scanner tool that will inform You have any problems Your vehicle has.
Paul P
July 30, 2020
The Toyota Corolla obd port should be located under the dashboard, beneath the steering wheel column
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