U064B
Lost Communication With Hybrid/EV Battery Pack Current Sensor B
U064B is an OBD-II diagnostic trouble code meaning: Lost Communication With Hybrid/EV Battery Pack Current Sensor B. Common causes: open or short circuit in the sensor circuit, current sensor b fault. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Switching to emergency mode
- Battery cannot be charged
- Error message on the instrument panel
Causes
- Open or short circuit in the sensor circuit
- Current sensor B fault
- Connector problems or contact corrosion
- Hybrid ECU malfunction
- Wiring harness damage
How to Fix
- Check continuity of current sensor B circuit
- Check connections and connector contacts
- Test current sensor B
- Check the power supply and ground of the sensor
- Scan the ECU for additional errors
- Repair only from an authorized dealer
Related codes
Error U064B by Vehicle Brand
FAQ
What does the U064B code mean?
U064B is an OBD-II diagnostic trouble code that indicates: Lost Communication With Hybrid/EV Battery Pack Current Sensor B
What causes a U064B error code?
The most common causes of U064B include: Open or short circuit in the sensor circuit; Current sensor B fault; Connector problems or contact corrosion; Hybrid ECU malfunction.
How do I fix a U064B diagnostic trouble code?
To fix U064B: Check continuity of current sensor B circuit. Check connections and connector contacts. Test current sensor B. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U064B?
Do not drive — repair immediately
How much does it cost to fix U064B?
The estimated repair cost for U064B is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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