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 has forced the battery to disconnect from the system. It's like when you unplug a toy to make it stop working.
The vehicle's control module has detected a condition that requires the hybrid or electric vehicle battery to be disconnected for safety or performance reasons.
The P2D39 code is triggered when the vehicle's control system initiates a forced disconnection of the hybrid or EV battery. This is typically done to protect the battery or the vehicle's electrical system from damage due to an abnormal condition.
• Warning light on dashboard
• Loss of power
• Vehicle may not start
• Battery overheating
• Faulty battery management system
• Electrical short circuit
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
Battery Management System: A system that manages the charging and discharging of a battery.
• Check for additional trouble codes.
• Inspect battery and connections for damage.
• Test the battery management system.
• Replace damaged battery components.
• Repair or replace faulty wiring.
• Update or reprogram battery management software.
• OBD-II scanner
• Multimeter
• Battery diagnostic tool
$500 - $2000
Difficult
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular battery maintenance
• Avoid extreme temperatures
• Ensure proper charging practices
Electrical System Issue
• Do not drive the vehicle until it is inspected.
• Contact a professional mechanic for diagnosis.
• Avoid attempting repairs without proper knowledge.
Check with the vehicle manufacturer for battery warranty coverage.
This code has been more prevalent with the rise of hybrid and electric vehicles, highlighting the importance of battery management.
High – Immediate attention is required to prevent potential damage or safety hazards.
Driving with a disconnected battery can be dangerous and may violate vehicle safety regulations.
• Vehicle at operating temperature
• Battery fully charged
The hybrid or EV battery is typically located under the vehicle floor or in the rear compartment.
Q: Can I drive my car with this code?
A: No, it is not safe to drive with this code active. The battery is disconnected, which can lead to a loss of power.
Q: Will this code clear itself?
A: No, the issue must be resolved and the code cleared with an OBD-II scanner.
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