Engine-Codes - Generic - P0AC2

P0AC2 - Hybrid Battery Pack Current Sensor 'A' Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0AC2 Possible Causes

  • Hybrid battery junction block
  • Faulty Battery Smart Unit
  • Battery Smart Unit harness is open or shorted
  • Battery Smart Unit circuit poor electrical connection

How do I fix code P0AC2?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P0AC2 code

Labor: 1.0

The cost of diagnosing the P0AC2 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0AC2 Meaning

The battery current sensor, which is mounted on the positive cable side of the HV battery assembly, detects the amperage that flows into the HV battery. The battery smart unit inputs a voltage, which varies between 0 and 5 V in proportion to the amperage, into the IB terminal from the battery current sensor. An output voltage of the battery current sensor below 2.5 V indicates that the HV battery is being discharged, and above 2.5 V indicates that the HV battery is being charged. The power management control ECU determines the charging and discharging amperage of the HV battery based on the

P0AC2 More Information

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Information for specific makes

  • P0AC2 BUICK Hybrid/EV Battery Low Resolution Current Sensor Circuit High Voltage
  • P0AC2 CADILLAC Hybrid/EV Battery Low Resolution Current Sensor Circuit High Voltage
  • P0AC2 CHEVROLET Hybrid/EV Battery Low Resolution Current Sensor Circuit High Voltage
  • P0AC2 GMC Hybrid/EV Battery Low Resolution Current Sensor Circuit High Voltage
  • P0AC2 LEXUS Hybrid Battery Pack Current Sensor 'A' Circuit High
  • P0AC2 SATURN Hybrid/EV Battery Low Resolution Current Sensor Circuit High Voltage
  • P0AC2 TOYOTA Hybrid Battery Pack Current Sensor 'A' Circuit High

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