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 voltage from the hybrid or electric car's battery correctly. It's like when your game controller isn't working because the batteries are not connected properly.
This code indicates a problem with the voltage sensing circuit in the hybrid or electric vehicle's battery system. It means the voltage detected is outside the expected range.
The P0B87 code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects an issue with the voltage sense circuit for the hybrid or electric vehicle battery. This could be due to a fault in the wiring, connectors, or the battery itself, causing the voltage readings to be outside the normal range.
• Check Engine Light is on
• Reduced fuel efficiency
• Possible loss of electric drive power
• Faulty battery voltage sensor
• Damaged wiring or connectors
• Malfunctioning battery control module
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
• Scan the vehicle for codes and freeze frame data.
• Inspect the battery voltage sensor and related wiring for damage.
• Test the battery control module for proper operation.
• Replace or repair the battery voltage sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the battery control module if necessary.
• OBD-II scanner
• Multimeter
• Wiring diagram
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect and maintain battery connections.
• Ensure the battery management system is updated.
• Avoid overloading the vehicle's electrical system.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have your vehicle inspected by a professional.
• Avoid driving long distances until the issue is resolved.
Battery and related components may be covered under the manufacturer's warranty, especially for hybrid and electric vehicles.
This code has become more common with the increase in hybrid and electric vehicles, highlighting the importance of battery management systems.
Moderate – Addressing this issue promptly can prevent further damage to the battery system.
Driving with a malfunctioning battery system can lead to reduced performance and potential safety hazards.
• Vehicle must be running or in a key-on engine-off state.
• Battery system must be under load for accurate testing.
The battery voltage sensor is typically located near the battery pack or integrated within the battery control module.
Q: Can I drive my car with a P0B87 code?
A: It's not recommended to drive for long distances as it can lead to further issues with the battery system.
Q: How do I reset the P0B87 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed to prevent it from returning.
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