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 temperature of the battery in a hybrid or electric vehicle. It's like when a thermometer keeps giving different readings even though the temperature hasn't changed.
The P0CBB code indicates that the vehicle's onboard computer has detected an intermittent or erratic signal from the hybrid or electric vehicle's battery temperature sensor P circuit.
The hybrid/EV battery temperature sensor monitors the temperature of the battery pack to ensure it operates within safe limits. An intermittent or erratic signal suggests that the sensor or its circuit might be faulty, leading to inaccurate temperature readings.
• Check Engine Light is on
• Reduced battery performance
• Possible overheating of the battery
• Faulty battery temperature sensor
• Damaged or corroded wiring/connectors
• Faulty battery management system
OBD-II: On-Board Diagnostics, a standardized system in vehicles for self-diagnosis and reporting.
Multimeter: A tool used to measure electrical voltage, current, and resistance.
• Use an OBD-II scanner to confirm the code.
• Inspect the battery temperature sensor and its wiring for damage or corrosion.
• Test the sensor's output with a multimeter to ensure it's functioning correctly.
• Replace the faulty battery temperature sensor.
• Repair or replace damaged wiring/connectors.
• Reprogram or replace the battery management system if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks on the battery system
• Ensure proper cooling of the battery pack
• Inspect wiring and connectors periodically
Sensor Issue
• Avoid driving aggressively until the issue is fixed.
• Schedule a service appointment with a qualified technician.
Check with the vehicle manufacturer for warranty coverage on hybrid/EV components.
This code has become more common with the increase in hybrid and electric vehicles, as battery management systems are crucial for their operation.
Moderate – It should be addressed soon to prevent potential battery damage.
Ignoring this issue could lead to battery damage or reduced vehicle performance. Always follow safety protocols when working with high-voltage systems.
• Vehicle at operating temperature
• Battery system under load
The battery temperature sensor is typically located within or near the battery pack of the vehicle.
Q: Can I drive with a P0CBB code?
A: It's not recommended to drive for long periods with this code, as it may lead to battery damage.
Q: How do I reset the check engine light after fixing the issue?
A: Use an OBD-II scanner to clear the code after the repair is completed.
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