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Engine-Codes – Generic – P0C87

P0C87 Code - Hybrid Battery Temperature Sensor 'G'/'H' Correlation

Quick Answer

The diagnostic trouble code P0C87 refers to a discrepancy between the readings of the hybrid battery temperature sensors 'G' and 'H'. Common causes include Faulty Sensors: The most common cause of this code is a malfunction or failure of one or both of the hybrid battery temperature sensors 'G' or 'H', Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connecting the sensors to the hybrid control module can also trigger this code, Hybrid Battery System Malfunction: An underlying issue with the hybrid battery system itself, such as a faulty control module, could cause the sensors to provide inaccurate readings. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0C87 indicates Hybrid Battery Temperature Sensor 'G'/'H' Correlation.
Common causes
Common causes include Faulty Sensors: The most common cause of this code is a malfunction or failure of one or both of the hybrid battery temperature sensors 'G' or 'H', Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connecting the sensors to the hybrid control module can also trigger this code, Hybrid Battery System Malfunction: An underlying issue with the hybrid battery system itself, such as a faulty control module, could cause the sensors to provide inaccurate readings.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0C87 Description

The diagnostic trouble code P0C87 refers to a discrepancy between the readings of the hybrid battery temperature sensors 'G' and 'H'. In hybrid vehicles, the battery temperature sensors play a crucial role in monitoring and regulating the temperature of the battery pack. This is essential for maintaining optimal performance, efficiency, and longevity of the hybrid battery system.

OBDII Code P0C87 - Hybrid Battery Temperature Sensor 'G'/'H' Correlation
P0C87 Code - Hybrid Battery Temperature Sensor 'G'/'H' Correlation

Common Causes of P0C87

  1. Faulty Sensors: The most common cause of this code is a malfunction or failure of one or both of the hybrid battery temperature sensors 'G' or 'H'.
  2. Wiring Issues: Corrosion, damage, or poor connections in the wiring harness connecting the sensors to the hybrid control module can also trigger this code.
  3. Hybrid Battery System Malfunction: An underlying issue with the hybrid battery system itself, such as a faulty control module, could cause the sensors to provide inaccurate readings.
  4. Environmental Factors: Extreme temperatures or environmental conditions can sometimes affect the sensors' accuracy and trigger this code.

Symptoms of P0C87

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Fuel Efficiency: A discrepancy in battery temperature readings can lead to decreased fuel efficiency as the hybrid system may not operate optimally.
  3. Erratic Battery Performance: The hybrid system may exhibit erratic behavior or performance issues due to inaccurate temperature readings.
  4. Battery Overheating or Undercharging: Incorrect temperature data can potentially result in the battery overheating or not charging properly.

How to Fix P0C87

  1. Diagnose the Issue: Begin by using a diagnostic tool to read the code and determine the specific cause of the correlation error between sensors 'G' and 'H'.
  2. Inspect Sensors and Wiring: Check the condition of the sensors, wiring harness, and connectors for any visible damage, corrosion, or loose connections.
  3. Replace Faulty Sensors: If one or both of the temperature sensors are found to be faulty, they will need to be replaced with new, OEM-quality sensors.
  4. Repair Wiring Issues: Address any wiring problems by repairing or replacing damaged wires, connectors, or terminals.
  5. Clear Codes and Test: After completing the repairs, clear the diagnostic trouble codes, reset the system, and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P0C87

The cost of repairing a hybrid battery temperature sensor 'G'/'H' correlation issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the parts for replacing the sensors can range from $100 to $300, while the labor costs can be anywhere from $150 to $400. Overall, you can expect to pay between $250 and $700 for this repair. It's important to note that these are rough estimates, and the actual costs may vary based on your vehicle's make and model, the severity of the issue, and the rates charged by your chosen auto repair shop.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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