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 is having trouble reading the battery's voltage correctly because the signal is not steady.
The P0B80 code is triggered when the vehicle's control module detects an intermittent or erratic signal from the voltage sensing circuit of the hybrid/EV battery.
This code indicates that the voltage sensing circuit for the hybrid or electric vehicle's battery is experiencing intermittent or erratic signals. This could be due to wiring issues, connector problems, or a failing sensor, causing the vehicle's control module to receive unreliable data about the battery's voltage.
• Check Engine Light illuminated
• Reduced fuel efficiency
• Possible loss of electric power mode
• Faulty battery voltage sensor
• Loose or corroded electrical connections
• Damaged wiring in the voltage sensing circuit
Voltage Sensor: A device that measures the electrical potential difference between two points in an electric circuit.
Intermittent: Occurring at irregular intervals; not continuous or steady.
• Inspect the battery voltage sensor and its connections.
• Check for damaged or corroded wiring in the circuit.
• Use a multimeter to test the voltage sensor output.
• Replace the faulty battery voltage sensor.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Keep the battery area clean and dry.
• Perform routine maintenance checks.
Sensor Issue
• Avoid driving in extreme temperatures.
• Have regular check-ups for your hybrid/EV system.
• Monitor your vehicle's performance for any changes.
Repairs may be covered under the vehicle's hybrid system warranty if applicable.
This code has been more common in older hybrid models as they age and wiring becomes more susceptible to wear.
Moderate – While the car may still operate, it can lead to reduced efficiency and potential battery issues.
Driving with this code may not be safe if the battery's health is compromised. It is recommended to address the issue promptly.
• Vehicle at operating temperature
• Battery under load conditions
The battery voltage sensor is typically located near or on the hybrid/EV battery pack.
Q: Can I drive my car with a P0B80 code?
A: It's possible, but not recommended as it may affect your car's efficiency and battery health.
Q: What happens if I ignore this code?
A: Ignoring the code can lead to reduced fuel efficiency and potential battery damage over time.
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