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 understanding the temperature readings from the battery sensors. It's like when a thermometer gives you two different temperatures for the same thing, and you don't know which one to trust.
The vehicle's control module is detecting an inconsistency between the readings of two battery temperature sensors, labeled G and H.
The P0C87 code is triggered when the Powertrain Control Module (PCM) or Battery Energy Control Module (BECM) detects a discrepancy between the temperature readings of two specific battery temperature sensors (G and H). These sensors are responsible for monitoring the temperature of the hybrid or electric vehicle's battery to ensure it operates within a safe range. A correlation issue indicates that the sensors are providing conflicting data, which could affect battery performance and safety.
• Check Engine Light is on
• Reduced battery performance
• Vehicle may enter limp mode
• Unusual battery temperature readings
• Possible overheating of the battery
• Faulty battery temperature sensor G
• Faulty battery temperature sensor H
• Wiring issues or poor connections in the sensor circuit
• Faulty Battery Energy Control Module (BECM)
• Software issues in the vehicle's control module
PCM: Powertrain Control Module
BECM: Battery Energy Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code and check for additional codes.
• Inspect the wiring and connectors of the battery temperature sensors for damage or corrosion.
• Test the battery temperature sensors G and H for proper operation.
• Check the Battery Energy Control Module for faults.
• Update the vehicle's software if necessary.
• Replace faulty battery temperature sensor G or H.
• Repair or replace damaged wiring or connectors.
• Replace the Battery Energy Control Module if defective.
• Perform a software update on the vehicle's control module.
• OBD-II scanner
• Multimeter
• Wrench set
• Diagnostic software
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery temperature sensors for damage.
• Ensure proper maintenance of the vehicle's electrical systems.
• Keep software updated to the latest version.
Sensor Issue
• Do not ignore the Check Engine Light; get the vehicle diagnosed promptly.
• Avoid driving the vehicle aggressively until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer as battery-related components may be covered under warranty.
This code has become more common with the increase in hybrid and electric vehicles, as battery management systems have become more complex.
Moderate – While the vehicle may still be drivable, it's important to address this issue to prevent potential battery damage.
Ignoring this code could lead to battery overheating, which poses a safety risk. Always address vehicle issues promptly.
• Vehicle at operating temperature
• Battery under load conditions
The battery temperature sensors are typically located within or near the vehicle's battery pack.
Q: Can I drive my car with the P0C87 code?
A: It's possible to drive short distances, but it's not recommended as it can lead to battery damage.
Q: How do I reset the P0C87 code?
A: After fixing the issue, you can reset the code using an OBD-II scanner. However, if the problem persists, the code will reappear.
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