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 a part in your hybrid or electric car's battery system is stuck in the 'on' position when it shouldn't be. It's like a light switch that's stuck on, even when you try to turn it off.
The precharge contactor is responsible for controlling the flow of electricity in the battery system. If it's stuck closed, it can cause issues with the battery's operation.
The precharge contactor is a component in the hybrid or electric vehicle's battery system that helps manage the initial flow of electricity when the vehicle is started. If the contactor is stuck closed, it means that the circuit is continuously closed, allowing current to flow when it should not, which can lead to battery and system malfunctions.
• Warning light on the dashboard
• Reduced battery performance
• Vehicle may not start
• Faulty precharge contactor
• Wiring issues in the battery circuit
• Malfunctioning battery control module
Precharge Contactor: A component that controls the initial flow of electricity in a battery system.
Battery Control Module: A device that manages the operation and health of a vehicle's battery system.
• Perform a visual inspection of the battery system components.
• Check for any error codes related to the battery control module.
• Test the precharge contactor for proper operation.
• Replace the faulty precharge contactor.
• Repair or replace damaged wiring in the battery circuit.
• Reprogram or replace the battery control module if necessary.
• Multimeter
• OBD-II scanner
• Wrench set
$300 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks on the battery system.
• Avoiding excessive charging and discharging cycles.
• Keeping the battery system clean and free of corrosion.
Electrical Circuit Issue
• Do not attempt to drive the vehicle if the warning light is on.
• Consult a professional mechanic for diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on hybrid/EV battery components.
This code has been associated with hybrid and electric vehicles since their introduction, highlighting the importance of battery system maintenance.
High – This issue can lead to significant battery damage if not addressed promptly.
Driving with a malfunctioning battery system can be dangerous and may violate vehicle safety regulations.
• Vehicle in 'on' mode
• Battery system engaged
The precharge contactor is located within the battery pack or near the battery control module in the vehicle.
Q: Can I drive with a P0AE2 code?
A: It's not recommended to drive with this code active, as it can lead to further damage to the battery system.
Q: How can I prevent this issue?
A: Regular maintenance and avoiding extreme battery usage can help prevent this issue.
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