AutoCodes – Generic – U064A

U064A Code - Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'

Quick Answer

The Battery Pack Control Module (BPCM) is contained within the 48 volt Power Pack Unit (PPU). Common causes include Faulty Battery Pack Control Module (BPCM), Battery Pack Control Module (BPCM) harness is open or shorted, Battery Pack Control Module (BPCM) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U064A indicates Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'.
Common causes
Common causes include Faulty Battery Pack Control Module (BPCM), Battery Pack Control Module (BPCM) harness is open or shorted, Battery Pack Control Module (BPCM) circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 965
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 14, 2020
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Code U064A Description

The Battery Pack Control Module (BPCM) is contained within the 48 volt Power Pack Unit (PPU). The BPCM provides battery management and system functionality in conjunction with Cell Supervision Circuits (CSCs) that monitor and balance the battery cells as well as the monitoring of related external support systems. The CSCs are also located within the Battery Pack. The BPCM communicates with the vehicle via CAN-C bus. The main functions of the BPCM are to manage battery voltage and maintain the 12 volt battery system using battery pack current, voltage and temperature sensing capabilities. CAN communication is used to monitor other vehicle systems and for fault detection reporting. The Diagnostic Trouble Code (DTC) sets when the Battery Pack Control Module (BPCM) detects a fault with internal or external components or circuitry.
OBDII Code U064A - Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A' - AutoCodes.com
U064A Code - Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'

What are the Possible Causes of the DTC U064A?

  • Faulty Battery Pack Control Module (BPCM)
  • Battery Pack Control Module (BPCM) harness is open or shorted
  • Battery Pack Control Module (BPCM) circuit poor electrical connection

How to Fix the DTC U064A?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U064A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U064A code?

Need more information on how to fix the U064A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U064A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • U064A Chrysler β€” Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'
  • U064A Dodge β€” Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'
  • U064A Jeep β€” Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'
  • U064A RAM β€” Lost Communication With Hybrid/EV Battery Pack Current Sensor 'A'
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U064A Code

1. What does the OBDII code U064A mean?

U064A indicates a loss of communication between the hybrid/EV battery pack current sensor 'A' and other control modules in the vehicle.

2. What are common symptoms of the U064A code?

Symptoms may include an illuminated check engine light, reduced vehicle performance, limited hybrid/EV functionality, or difficulty starting the vehicle.

3. What causes the U064A code to appear?

Common causes include a faulty hybrid/EV battery pack current sensor, damaged wiring or connectors, a failed control module, or software issues.

4. Can I drive my car with the U064A code?

While the vehicle may still be operable, driving with this code can lead to reduced performance or potential damage to the hybrid/EV system. It's best to address the issue promptly.

5. How do you diagnose the U064A code?

Technicians use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and check the communication network for faults.

6. How can the U064A code be fixed?

Repairs may include replacing the hybrid/EV battery pack current sensor, repairing damaged wiring or connectors, updating control module software, or replacing a failed control module.

7. What tools are needed to troubleshoot the U064A code?

A professional-grade OBDII scanner, a multimeter, and wiring diagrams are commonly used to diagnose and fix this issue.

8. Is the U064A code specific to certain vehicles?

While the code is common in hybrid and electric vehicles, its exact details and root causes may vary by manufacturer and model.

9. Can a low battery cause the U064A code?

Yes, a weak 12V battery or voltage fluctuations can sometimes disrupt communication and trigger this code.

10. How much does it cost to fix the U064A code?

Repair costs vary but may range from $150 to $800, depending on whether the issue is a simple wiring fix or requires sensor/module replacement.

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