Question

Lexus ES350 with engine code P2103, changed throttle body still the same code

Answer 1

HI there

If replacing the throttle didn't resolve the issue, then it's likely a wiring issue to the throttle body. You need to test the wiring and check for a blown fuse.

P2103 LEXUS - Throttle Actuator Control Motor Circuit High
Read more: https://www.autocodes.com/p2103_lexus.html