DTC P1580 (65): Battery Current Circuit Problem: General Description

The BCM (battery condition monitor) module samples the battery current sensor value several times during a set time until the power supply is stabilized after activation, and determines the amount of offset by using a moving average technique. The offset is at the midpoint (±6.7 A) between the maximum tolerance (±3.4 A) and the maximum offset error that allows the system to work normally (±10.0 A), and it is used as an offset failure threshold.

If the offset is beyond the threshold, a malfunction is detected and a DTC is stored.