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 voltage correctly because the signal is not steady. It's like trying to watch a TV show when the channel keeps cutting in and out.
The vehicle's control module is detecting an intermittent or erratic signal from the voltage sensing circuit of the hybrid/EV battery.
The P0B67 code is triggered when the powertrain control module (PCM) or battery management system (BMS) detects an inconsistent or unstable voltage reading from the battery voltage sense I circuit. This could be due to electrical noise, poor connections, or a failing sensor.
• Check Engine Light is on
• Reduced fuel efficiency
• Possible battery charging issues
• Faulty battery voltage sensor
• Poor electrical connections
• Damaged wiring harness
PCM: Powertrain Control Module
BMS: Battery Management System
• Use an OBD-II scanner to confirm the code.
• Inspect the battery voltage sensor and its connections.
• Check for damaged or corroded wiring.
• Replace the faulty battery voltage sensor.
• Repair or replace damaged wiring.
• Ensure all electrical connections are clean and secure.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections.
• Ensure wiring is not exposed to moisture.
• Schedule routine maintenance checks.
Sensor Issue
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult with a certified hybrid/EV technician.
Check with your vehicle manufacturer for warranty coverage on hybrid/EV components.
This code has become more common with the increasing number of hybrid and electric vehicles on the road.
Moderate – While the vehicle may still be drivable, it is important to address this issue to prevent potential battery damage.
Driving with this code may lead to reduced vehicle efficiency and potential battery damage, which could be costly to repair.
• Vehicle should be at operating temperature.
• Battery should be fully charged.
The battery voltage sensor is typically located near the hybrid or EV battery pack, often in the rear of the vehicle.
Q: Can I drive my car with a P0B67 code?
A: It's not recommended to drive for long periods with this code, as it could lead to battery issues.
Q: How can I prevent this code from appearing?
A: Regular maintenance and ensuring all electrical connections are secure can help prevent this code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.