Why does my Toyota not rev over 2000 rpm?

If your Toyota is not revving over 2000 rpm, it could be due to several issues, such as a faulty throttle position sensor, a problem with the fuel system, or an issue with the engine's electronic control unit (ECU). Additionally, it may be entering "limp mode" as a protective measure due to a detected fault. Checking for error codes using an OBD-II scanner can help identify the underlying issue. It's advisable to have a qualified mechanic diagnose the problem for accurate repairs.