When the battery voltage drops below a certain threshold, various electrical systems in the vehicle, including the engine control module (ECM), may malfunction or operate erratically. This can cause the ECM to detect and store a diagnostic trouble code (DTC), resulting in the illumination of the SES light.
In some cases, a weak battery can also lead to misfires or other engine performance issues, which can also trigger the SES light.
If the SES light comes on in your Infiniti I30, it's important to have the vehicle's battery and charging system checked as soon as possible to determine the cause and address any underlying problems.
