The Check Engine Light may illuminate with a stored code P0116, Indicating a fault with the engine coolant temperature sensor circuit. Replacement of the Powertrain control module with an updated computer may be required to correct this problem.
Lexus LX450 Problem Reports
RepairPal Verified Lexus LX450 Problem Reports
The Check Engine Light may illuminate with code P0441 and/or P0446 stored. Our technicians tell us these faults are commonly caused by a faulty charcoal canister or sticking EVAP system purge vacuum switching valve, Proper diagnoses will be required to determine the exact cause of the fault.