Правильно это назвать параметрическим стабилизатором на 1,2в. Прямое падение на диоде - 0,6в, х2=1,2в, смысл в стабилизации подаваемого напряжения независимо от напряжения бортовой сети(вреда не будет)
OBD Code P0605refers to The ECM/PCM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM/PCM controls the engine. SymptomsPossible sumptoms of OBD code P0605 - ECM/PCM calculation function is malfunctioning. - ECM/PCM memory system is malfunctioning. - ECM/PCM self shut-off function is malfunctioning CausesPossible causes of OBD code P0605 - ECM/PCM Harness power supply circuit is open or shorted - ECM/PCM Harness ground supply circuit is open or shorted - ECM/PCM may be faulty The Error code is generally activated on detection of the following conditions: Engine Light ON (or Service Engine Soon Warning Light) Possible Solutions