DTC P0620-49: Generator Control Circuit Internal Electronic Failure [09/2024 - ]: Description

WARNING: This page is about a different variant/trim than selected.

The alternator performs self-diagnosis of its internal circuits to detect malfunctions (open or short circuits).

The ECM receives the result via LIN communication and stores a DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Memory	Note
P0620-49	Generator Control Circuit Internal Electronic Failure	All of the following conditions are met (1 trip detection logic): Ignition switch ON. Except during engine cranking. Auxiliary battery voltage is 10.5 V or higher. No malfunction in the LIN communication system. Open or short in EXC circuit, or abnormal waveform for PH circuit.	Generator assembly	Charge warning is displayed	DTC stored	SAE Code: P0620 DTC for Mexico Models: Does not apply