Toyota Rav4 U0101: Meaning, Causes, + Diagnosis
U0101 is a generic powertrain code, which means it has the same definition for the Toyota Rav4 as it would any other vehicle. It means that your Rav4’s TCM (Transmission Control Module) can’t communicate with the rest of the vehicle, usually due to a bad wiring harness or an issue with the TCM itself. U0101 … Read more