P1447 HONDA Battery Module Deterioration

Possible causes
– Battery Module
Tech description
There is a factory service bulletin for the following Honda models:

2000 Honda Insight
2001 Honda Insight
2002 Honda Insight
2003 Honda Insight
2004 Honda Insight
2000-2004 Honda Insight Factory Service Bulletin OBDII Code P1447

Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1447 HONDA OBD Code Description

The high-voltage battery in the IMA (integrated motor assist) system is designed to operate within the upper and lower limits of the SOC (state of charge) voltage and the battery capacity limits. When the battery deteriorates, the voltage is subject to an increase or a decrease, so the limits of the battery capacity is narrowed. Therefore, if the upper and lower limits of the SOC are detected when driving, the BCM (battery condition monitor) calculates the sum of the current and calculates the battery capacity. If the power is less than a set value, a malfunction is detected and a DTC is stored.