230K is nothing, my Es300 made it 362K, still was running good.
Rerun code and fix it.
P0446
(DI–93)
Evaporative Emission Control
System Vent Control
Malfunction
Open or short in VSV circuit for EVAP
VSV for EVAP
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Open or short in VSV circuit for vapor pressure sensor
VSV for vapor pressure sensor
Vacuum hose cracked, holed, blocked, damaged or
disconnected
Charcoal canister cracked, holed or damage
P0430???