Hybrid battery pack deterioration what does that mean.
Hybrid battery pack deterioration.
As a hybrid crosses the 100k mile mark and the vehicle takes on a new life in its older years the battery systems that power the drivetrain will start to wear out and fail.
This is a generic diagnostic trouble code dtc and applies to many obd ii vehicles 1996 newer.
The battery ecu calculates the resistance of the hv battery through amperage and voltage and uses this resistance to determine the extent of deterioration of the hv battery.
The unused capacity undergoes a correctable degradation process that reduces battery capacity.
The high voltage hv battery is used to power the electric drive motor s.
It is also used to store energy recovered during regenerative braking and when the motor s are act as generators.
Code p0a7f stands for hybrid battery pack deterioration hybrid vehicles have high voltage nickel metal hydride or lithium ion batteries.
While there s no onboard test for the lifespan or health of the battery the best indicator of a properly functioning pack is the vehicle s fuel economy.
The driving cycle of a hybrid vehicle subjects the battery pack to repeated shallow depths of discharge of less than 10 of the battery capacity.
Some cells can be full while other cells in the same battery pack are empty.