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P0AC7 Lexus Code - Hybrid Battery Temperature Sensor 'B' Circuit Low

- Code Popularity: 1,178 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0AC7 Lexus?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty HV Battery Assembly (HV battery temperature sensor)
  • HV Battery Assembly harness is open or shorted
  • HV Battery Assembly circuit poor electrical connection
  • Faulty Battery smart unit
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How to Fix the DTC P0AC7 Lexus?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0AC7 Lexus code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P0AC7 Lexus Description

The battery temperature sensors are provided at 3 locations of the HV battery. The resistance of the thermistor, which is built into each battery temperature sensor, varies in accordance with changes in the HV battery temperature. The lower the battery temperature, the higher the thermistor resistance. Conversely, the higher the temperature, the lower the resistance. The battery smart unit uses the battery temperature sensors to detect the HV battery temperature, and sends the detected value to the power management control ECU. Based on the results of this detection, the power management control ECU controls the blower fan. (The blower fan starts when HV battery temperature rises above a predetermined level.)

OBDII Code P0AC7 Lexus - Hybrid Battery Temperature Sensor 'B' Circuit Low - AutoCodes.com
P0AC7 Lexus Code - Hybrid Battery Temperature Sensor 'B' Circuit Low

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