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 found a problem with how it measures the voltage of the hybrid or electric vehicle's battery. It's like when your toy's battery meter doesn't show the right amount of power left.
The vehicle's control module has detected an issue with the voltage sensing circuit for the hybrid or electric vehicle battery, specifically in the 'Q' circuit.
The P0B8C code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module detects a range or performance problem with the voltage sense circuit labeled as 'Q' for the hybrid/EV battery. This could indicate an issue with the circuit's ability to accurately measure or report the battery's voltage.
• Check Engine Light is on
• Reduced fuel efficiency
• Possible limited power mode
• Faulty battery voltage sensor
• Damaged wiring or connectors in the voltage sense circuit
• Faulty Battery Energy Control Module
PCM: Powertrain Control Module
EV: Electric Vehicle
• Use an OBD-II scanner to verify the code.
• Inspect the battery voltage sensor and its wiring for damage.
• Test the battery voltage sensor for proper operation.
• Replace the faulty battery voltage sensor.
• Repair or replace damaged wiring or connectors.
• Replace the Battery Energy Control Module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Ensure battery sensors are clean and free of debris.
• Schedule regular maintenance for hybrid/EV systems.
Sensor Issue
• Avoid driving long distances until the issue is resolved.
• Consult with a certified hybrid/EV technician for accurate diagnosis.
Repairs may be covered under the vehicle's hybrid/EV system warranty, typically 8 years/100,000 miles.
This code is relatively common in older hybrid/EV models as sensors and connections wear over time.
Moderate – It should be addressed soon to avoid potential battery performance issues.
Driving with a malfunctioning hybrid/EV battery sensor may lead to reduced vehicle performance and efficiency.
• Vehicle must be in a safe, stationary position.
• Battery should be fully charged for accurate testing.
The battery voltage sensor is typically located near or integrated into the hybrid/EV battery pack.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced vehicle performance and potential battery damage over time.
Q: Can I drive my car with this code?
A: While you can drive the car, it's recommended to get it checked soon to avoid further issues.
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