Possible causes – Sub-Throttle Position Sensor harness is open or shorted– Sub-Throttle Position Sensor circuit poor electrical connection– Faulty Sub-Throttle Position Sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Sub-Throttle Position Sensor harness is open or shorted– Sub-Throttle Position Sensor circuit poor electrical connection– Faulty Sub-Throttle Position Sensor Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Throttle Body Plate Binding– Faulty Throttle Actuator– Throttle Actuator harness is open or shorted– Throttle Actuator circuit poor electrical connection When is the code detected? Throttle valve locked during Engine Control Module (ECM) order to close Symptoms

Possible causes – Throttle Body Plate Binding– Faulty Throttle Actuator– Throttle Actuator harness is open or shorted– Throttle Actuator circuit poor electrical connection When is the code detected? Throttle valve locked during Engine Control Module (ECM) order to open Symptoms

P1663 LEXUS – OCV Circuit Malfunction Bank 2

P1656 LEXUS – OCV Circuit Malfunction Bank 1

P1645 LEXUS – Body ECU Malfunction

P1633 LEXUS – ECM Malfunction ETCS Circuit

P1605 LEXUS – Knock Control CPU Malfunction

P1600 LEXUS – ECM BATT Malfunction

P1566 LEXUS – Cruise Control Main Switch Circuit Malfunction

P1565 LEXUS – Cruise Control Main Switch Circuit Malfunction

P1520 LEXUS – Stop Lamp Switch Malfunction

P1500 LEXUS – Starter Signal Circuit Malfunction

P1410 LEXUS – EGR Valve Position Sensor Circuit Malfunction

P1411 LEXUS – EGR Valve Position Sensor Circuit Range/Performance Malfunction

P1354 LEXUS – VVT System Malfunction Bank 2

P1351 LEXUS – VVT Sensor Range/Performance Problem Bank 2

P1350 LEXUS – VVT Sensor Circuit Malfunction Bank 2

P1345 LEXUS – VVT Sensor Circuit Malfunction Bank 1