Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the part of the car that controls the battery's power connection. It's like a switch that isn't working right.
The P0ADC code indicates an issue with the control circuit for the positive contactor in a hybrid or electric vehicle's battery system.
The positive contactor is a component in hybrid and electric vehicles that connects the high-voltage battery to the vehicle's electrical system. When the control circuit for this contactor has a high voltage reading, it suggests that there may be an issue with the wiring, the contactor itself, or the control module.
• Check Engine Light is on
• Vehicle may not start
• Reduced performance or power
• Faulty battery positive contactor
• Damaged wiring or connectors
• Malfunctioning control module
Contactor: An electrically controlled switch used for switching a power circuit.
Control Module: A device that manages the operation of various systems in a vehicle.
• Use a diagnostic scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the battery positive contactor for proper operation.
• Replace damaged wiring or connectors.
• Replace the faulty battery positive contactor.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $800
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular maintenance checks
• Inspect electrical connections periodically
• Avoid overloading the electrical system
Electrical Circuit Issue
• Do not attempt to drive if the vehicle won't start.
• Consult with a professional mechanic for diagnosis and repair.
Repairs may be covered under the vehicle's hybrid or electric system warranty.
This code has become more common with the increase in hybrid and electric vehicle usage.
High – This issue can prevent the vehicle from starting or operating properly.
Driving with this issue can lead to unexpected vehicle shutdowns and should be addressed promptly.
• Vehicle in 'Ready' mode
• Battery fully charged
The battery positive contactor is located near the high-voltage battery, typically in the rear of the vehicle.
Q: Can I drive with a P0ADC code?
A: It's not recommended, as it may lead to the vehicle not starting or shutting down unexpectedly.
Q: How do I reset the P0ADC code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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Universal · Digital multimeter
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