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OBD II Fault Code

  • OBD II P0B12

OBD-II Code Battery current sensor failure is defined as a Hybrid Battery Pack Current Sensor "B" Circuit Intermittent/Erratic

The High Voltage Battery Pack has a current sensor mounted to the negative battery cable. This sensor tells the Battery control module if the battery pack is being charged or discharged. If the Battery control module detects a malfunction in the sensor's circuit, it will set code P0B12.

Common Problems That Trigger the P0B12 Code

  • Battery Control Module Failure
  • Battery current sensor failure
  • High voltage battery assembly failure
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