Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the way it measures the voltage in the hybrid or electric vehicle's battery. It's like the car can't tell how much power is left in its battery.
The P0B86 code is triggered when the vehicle's control module detects an issue with the voltage sensing circuit for the hybrid or electric vehicle's battery. This circuit is responsible for monitoring the voltage levels to ensure the battery is operating correctly.
The P0B86 code indicates a malfunction in the voltage sensing circuit of a hybrid or electric vehicle's battery. This circuit is crucial for monitoring the battery's voltage to ensure it remains within the optimal range for performance and safety. A fault in this circuit can lead to improper battery management and potential vehicle performance issues.
• Check engine light illuminated
• Reduced fuel efficiency
• Possible battery charging issues
• Faulty voltage sensor
• Damaged wiring or connectors in the voltage sensing circuit
• Defective battery control module
Voltage Sensor: A device that measures the electrical potential difference between two points.
Battery Control Module: A component that manages the operation and performance of a vehicle's battery.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors in the voltage sensing circuit for damage.
• Test the voltage sensor and battery control module for proper operation.
• Replace or repair damaged wiring or connectors.
• Replace the faulty voltage sensor.
• Replace or reprogram the battery control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections and wiring.
• Ensure the battery control module is updated with the latest software.
• Perform routine maintenance checks on the hybrid/EV system.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult with a certified hybrid/EV technician for accurate diagnosis and repair.
Check with your vehicle manufacturer as hybrid/EV components may have extended warranties.
This code has been more prevalent with the rise of hybrid and electric vehicles, highlighting the importance of battery management systems.
Moderate – While the vehicle may still operate, it is important to address this issue to prevent potential battery damage.
Driving with a malfunctioning battery voltage sensing circuit may lead to reduced performance and potential safety risks.
• Vehicle at operating temperature
• Battery fully charged
The voltage sensor is typically located near the hybrid/EV battery pack, often integrated into the battery management system.
Q: Can I drive my car with a P0B86 code?
A: It's not recommended to drive with this code as it may lead to battery performance issues.
Q: How do I clear a P0B86 code?
A: After repairs, the code can be cleared with an OBD-II scanner. However, it will return if the underlying issue is not fixed.
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