P1065 Toyota ECM Power Supply Circuit
Possible causes
– ECM Harness power supply circuit is open or shorted
– ECM Harness ground supply circuit is open or shorted
– ECM may be faulty
– ECM Harness ground supply circuit is open or shorted
– ECM may be faulty
What about the obd code?
ECM back-up RAM system does not function properly.
Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
P1065 Toyota Description
Battery voltage is supplied to the Engine Control Module (ECM) even when the ignition switch is turned OFF for the ECM memory function of the DTC memory, the air-fuel ratio feedback compensation value memory, the idle air volume learning value memory, etc.
Toyota Vehicle:Toyota Prius,Toyota Celica,Toyota Supra,Toyota Carina,Toyota Camry,Toyota MR2,Toyota Aygo,Toyota 4Runner,Toyota Avalon,Toyota Camry,Toyota Corolla,Toyota FJ Cruiser,Toyota Highlander,Toyota Land Cruiser,Toyota Matrix,Toyota Prius,Toyota RAV4,Toyota Sequoia,Toyota Sienna,Toyota Solara,Toyota Tacoma,Toyota Tundra,Toyota Yaris,