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 part of the car's battery that helps it run is getting too hot. It's like when your phone gets really warm if you use it too much, but for the car's battery.
The code P2D46 indicates that the temperature of the battery pack B in a hybrid or electric vehicle has exceeded the safe operating range.
The P2D46 code is triggered when the temperature sensor in the hybrid or electric vehicle's battery pack B detects a temperature that exceeds the manufacturer's specified threshold. This could be due to excessive current draw, inadequate cooling, or a malfunctioning temperature sensor.
• Warning light on dashboard
• Reduced vehicle performance
• Battery overheating
• Faulty temperature sensor
• Inadequate cooling system
• Excessive current draw from the battery
Battery Pack: A set of batteries or cells used to power an electric vehicle.
Temperature Sensor: A device that measures the temperature of a component or environment.
• Check for any active recalls related to the battery system.
• Inspect the battery cooling system for blockages or failures.
• Test the temperature sensor for proper operation.
• Replace faulty temperature sensor.
• Repair or replace cooling system components.
• Ensure battery connections are secure and not causing excessive current draw.
• OBD-II scanner
• Multimeter
• Thermal camera
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance of the cooling system.
• Avoiding excessive load on the battery.
• Monitoring battery temperature regularly.
Battery Performance Issue
• Avoid driving the vehicle until the issue is resolved.
• Have the vehicle inspected by a professional technician.
Battery-related issues may be covered under the vehicle's hybrid or EV warranty.
This code has become more common as the number of hybrid and electric vehicles increases, highlighting the importance of battery thermal management.
High – Overheating can lead to battery damage or failure, which may be costly and dangerous.
Driving with an overheated battery can be hazardous. It's important to address this issue promptly to ensure safety.
• Vehicle should be at operating temperature.
• Battery should be under load to simulate real-world conditions.
Battery pack B is typically located under the vehicle floor or in the rear of the vehicle.
Q: Can I drive my car with this code?
A: It's not recommended to drive the car until the issue is fixed, as it could lead to further damage or safety risks.
Q: How can I prevent this issue?
A: Regular maintenance and avoiding excessive battery load can help prevent overheating.
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