DTC P262B

DTC P262B:  Battery Condition Monitor Module Timer

General Description 

Courtesy of HONDA, U.S.A., INC.

The CPU in the battery condition monitor module has built in power off timer that measures the duration from electric powertrain system off to the next vehicle ON mode. The CPU accesses to the power off timer when reading the measured duration. If the access process fails or an abnormality is found in the read data, the battery condition monitor module detects a malfunction and stores a DTC. Even if the access is normally performed, the battery condition monitor module stores a DTC when the measured duration accuracy of the power off timer is out of normal range.

Monitor Execution, Sequence, Duration, DTC Type 

Enable Conditions 

*: Excludes after the 12 volt battery is reconnected

Malfunction Threshold 

One of these conditions is occurs:

• The access process to the power off timer fails.
• The malfunction is found in the read data.
• When the difference between the CPU and the power off timer measurement time is 50 % or more continuously for three times.*

*: Power off timer measurement updates once per minute.

Possible Cause 

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• Battery condition monitor module internal circuit failure

Diagnosis Details 

Conditions for setting the DTC 

When a malfunction is detected, the MIL comes on and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the battery condition monitor module memory.

Conditions for clearing the DTC 

The MIL is cleared if the malfunction does not return in three consecutive trips in which the diagnostic runs. The MIL, the Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool clear command.