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 fan that cools the battery isn't working right. It's like when a fan in your room doesn't turn on when it's supposed to.
The P0D65 code is triggered when the vehicle's control module detects a low voltage or no signal from the circuit that controls the cooling fan for the hybrid or electric vehicle battery pack.
The cooling fan enable circuit is responsible for activating the fan that cools the battery pack in a hybrid or electric vehicle. If the circuit has a low voltage or is not functioning properly, it can lead to overheating of the battery pack, which can cause damage or reduced efficiency. The control module monitors this circuit and sets the P0D65 code when it detects an issue.
• Check Engine Light is on
• Battery overheating
• Reduced vehicle performance
• Faulty cooling fan relay
• Damaged wiring or connectors in the fan circuit
• Faulty battery pack cooling fan
OBD-II: On-Board Diagnostics, a standardized system for self-diagnostics in vehicles.
Relay: An electrical switch that opens and closes under control of another electrical circuit.
• Check for any other related trouble codes.
• Inspect the cooling fan relay and circuit for damage or corrosion.
• Test the cooling fan operation and check for proper voltage.
• Replace the faulty cooling fan relay.
• Repair or replace damaged wiring or connectors.
• Replace the battery pack cooling fan if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly check and maintain the cooling system.
• Ensure all electrical connections are secure and free of corrosion.
• Perform routine vehicle diagnostics.
Circuit Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if you notice any symptoms.
• Avoid driving the vehicle under heavy load until the issue is resolved.
Check with your vehicle manufacturer as the battery cooling system may be covered under warranty.
This code has been more common in earlier models of hybrid and electric vehicles as manufacturers have improved cooling systems over time.
Moderate – It's important to address this issue to prevent battery damage.
Driving with a malfunctioning battery cooling system can lead to overheating and potential safety hazards.
• Vehicle at operating temperature
• Battery under load conditions
The battery cooling fan is typically located near the battery pack, often in the rear of the vehicle.
Q: Can I drive my car with a P0D65 code?
A: It's not recommended to drive for long periods with this code active, as it can lead to battery overheating and damage.
Q: How do I reset the P0D65 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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