Hybrid Battery Voltage Sense Circuit Low
The P0B6F code indicates that the hybrid battery voltage sense circuit is reading lower than expected. This circuit monitors the voltage of the high-voltage hybrid battery pack. A low voltage reading can be caused by a faulty battery voltage sensor, damaged wiring or connectors, or a weak hybrid battery. This issue can affect the hybrid system's performance and may lead to reduced fuel economy or loss of electric power assist.
01. Most Common Causes
- Faulty hybrid battery voltage sensor
- Damaged or corroded wiring/connectors in the voltage sense circuit
- Weak or failing hybrid battery pack
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Reduced fuel economy
- Loss of electric power assist
- Hybrid system warning message on dashboard
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all stored codes and freeze frame data.
Step 2: Visually inspect the hybrid battery voltage sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Measure the voltage at the sensor connector and compare to manufacturer specifications.
Step 4: If sensor and wiring are okay, test the hybrid battery pack's voltage and health using a specialized battery tester.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it may indicate a serious hybrid battery issue. The vehicle may lose power or stall, especially in electric mode. Have it diagnosed promptly.
How much does it cost to fix?▼
The cost to diagnose and repair P0B6F typically ranges from $50 to $150 for diagnosis, plus parts and labor. Sensor replacement can cost $100-$300, while battery pack replacement is much higher.