Engine-Codes.com
Engine-Codes – Generic – P0C71

P0C71 Code - Hybrid Battery Temperature Sensor 'D'/'E' Correlation

Quick Answer

The diagnostic trouble code P0C71 indicates a correlation issue between the hybrid battery temperature sensors 'D' and 'E' in a hybrid vehicle. Common causes include Faulty Temperature Sensors: The most common cause of this code is a malfunctioning hybrid battery temperature sensor 'D' or 'E', Wiring Issues: Corroded or damaged wiring connections to the temperature sensors can also trigger this code, Hybrid Control Module Failure: A failure in the hybrid control module that processes the sensor data can lead to a correlation issue. 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
P0C71 indicates Hybrid Battery Temperature Sensor 'D'/'E' Correlation.
Common causes
Common causes include Faulty Temperature Sensors: The most common cause of this code is a malfunctioning hybrid battery temperature sensor 'D' or 'E', Wiring Issues: Corroded or damaged wiring connections to the temperature sensors can also trigger this code, Hybrid Control Module Failure: A failure in the hybrid control module that processes the sensor data can lead to a correlation issue.
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 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0C71 Description

The diagnostic trouble code P0C71 indicates a correlation issue between the hybrid battery temperature sensors 'D' and 'E' in a hybrid vehicle. These sensors are crucial for monitoring the temperature of the hybrid battery pack, which is essential for maintaining optimal performance and preventing overheating or overcooling.

OBDII Code P0C71 - Hybrid Battery Temperature Sensor 'D'/'E' Correlation
P0C71 Code - Hybrid Battery Temperature Sensor 'D'/'E' Correlation

Common Causes of P0C71

  1. Faulty Temperature Sensors: The most common cause of this code is a malfunctioning hybrid battery temperature sensor 'D' or 'E'.
  2. Wiring Issues: Corroded or damaged wiring connections to the temperature sensors can also trigger this code.
  3. Hybrid Control Module Failure: A failure in the hybrid control module that processes the sensor data can lead to a correlation issue.
  4. Environmental Factors: Extreme temperatures or exposure to moisture can affect the accuracy of the temperature sensors.
  5. Hybrid Battery Pack Issues: Problems with the hybrid battery pack itself, such as cell degradation or damage, can impact the sensor readings.

Symptoms of P0C71

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: The vehicle may experience decreased fuel efficiency due to the hybrid system operating inefficiently.
  3. Loss of Power: The vehicle may exhibit a loss of power or acceleration due to the hybrid system not functioning optimally.
  4. Inconsistent Hybrid System Operation: The hybrid system may operate erratically, with the vehicle switching between electric and gasoline power modes unexpectedly.
  5. Overheating or Overcooling: In extreme cases, the hybrid battery pack may overheat or overcool, leading to potential damage to the battery cells.

How to Fix P0C71

  1. Diagnostic Scan: Begin by using a diagnostic scan tool to retrieve the specific trouble code and identify the correlation issue between the temperature sensors.
  2. Inspect Sensors and Wiring: Inspect the hybrid battery temperature sensors 'D' and 'E' for any visible damage or corrosion. Check the wiring connections for any issues.
  3. Replace Faulty Sensors: If a sensor is found to be faulty, replace it with a new sensor that meets the manufacturer's specifications.
  4. Repair Wiring Connections: Repair or replace any damaged wiring connections to ensure a secure and reliable connection to the temperature sensors.
  5. Reset System and Clear Codes: After completing the repairs, reset the vehicle's hybrid system and clear the diagnostic trouble codes to see if the issue has been resolved.

Cost to Fix P0C71

The typical repair costs for addressing a hybrid battery temperature sensor correlation issue can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

Need more information about the P0C71 code?

Need more information on how to fix the P0C71 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C71 code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P0C71 Code

No Frequently Asked Questions about P0C71 Code found.

Discuss the causes and fixes for P0C71 OBDII Code

Submit a New Comment

Code P0C71 comments

No comments found for this page.