P1400 TOYOTA Sub-Throttle Position Sensor Circuit Fault

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)

P0420 TOYOTA Catalyst System Efficiency Below Threshold Bank 1

Possible causes – Three way catalyst converter Bank 1– Exhaust tube– Intake air leaks– Fuel injectors may be faulty– Fuel injector leaks– Spark plugs may be faulty– Improper ignition timing– Engine Control Module (ECM) Tech description As the code description implies the P0420 code means that the vehicle’s control module has detected that the three-way…

P0430 TOYOTA Catalyst System Efficiency Below Threshold Bank 2

Possible causes – Three way catalyst converter Bank 2 – Exhaust tube – Intake air leaks – Fuel injectors may be faulty – Fuel injector leaks – Spark plugs may be faulty – Improper ignition timing – Engine Control Module (ECM) Tech description As the code description implies the P0430 code means that the vehicle’s…