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 thinks the sensor that checks the battery's temperature is saying the temperature is too high, or the sensor itself is not working right.
The P0CB5 code is triggered when the vehicle's powertrain control module (PCM) detects a high voltage signal from the hybrid or electric vehicle battery temperature sensor circuit O.
The P0CB5 code indicates a problem with the hybrid or electric vehicle battery temperature sensor circuit O. This sensor is responsible for monitoring the temperature of the battery pack. A 'circuit high' condition means the sensor is sending a higher than expected voltage signal to the PCM, suggesting either a sensor fault, wiring issue, or a problem with the PCM itself.
• Check Engine Light is on
• Reduced fuel efficiency
• Possible battery overheating
• Faulty battery temperature sensor
• Damaged or corroded wiring or connectors
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the battery temperature sensor for proper operation.
• Replace the faulty battery temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Digital multimeter
• Wiring repair tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery connections and wiring.
• Ensure the battery cooling system is functioning correctly.
• Perform regular vehicle maintenance.
Sensor Issue
• Avoid driving the vehicle until the issue is diagnosed and fixed.
• Consult with a certified mechanic for accurate diagnosis.
Check if the vehicle's hybrid system warranty covers sensor issues.
This code has become more common as hybrid and electric vehicles have increased in popularity.
Moderate – Address the issue soon to prevent potential battery damage.
Ignoring this code could lead to battery damage and reduced vehicle performance.
• Vehicle must be in a safe, stationary position.
• Ensure the battery is at normal operating temperature.
The battery temperature sensor is typically located within the battery pack or near the battery cooling system.
Q: Can I drive my car with a P0CB5 code?
A: It's not recommended to drive with this code active, as it could lead to battery damage.
Q: How can I reset the P0CB5 code?
A: After fixing the issue, you can use an OBD-II scanner to clear the code.
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