P0B22 OBD-II: Hybrid Battery Pack Voltage Sense "D" Circuit Intermittent/Erratic
P0B22 Severity
Should you fix P0B22 yourself?
Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.
Proper diagnosis will save you time and money on unnecessary repairs.
Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.
What causes OBD-II fault code P0B22?
The hybrid battery pack is composed of many individual battery cells (sometimes over 300 cells). Those cells are then grouped together. each group has a voltage monitor attached to it that tells the battery control module (or hybrid powertrain control module) the available voltage for each cell group. If a cell group's voltage is implausible, code P0B22 is set.
OBD II Fault Code
- OBD II P0B22
OBD-II Code Diagnostic Trouble Code is defined as a Hybrid Battery Pack Voltage Sense "D" Circuit Intermittent/Erratic
The hybrid battery pack is composed of many individual battery cells (sometimes over 300 cells). Those cells are then grouped together. each group has a voltage monitor attached to it that tells the battery control module (or hybrid powertrain control module) the available voltage for each cell group. If a cell group's voltage is implausible, code P0B22 is set.
Common Problems That Trigger the P0B22 Code
- Battery contactor assembly failure
- Battery Energy Control Module (BECM) failure
Ask our experts about P0B22.
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