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 there is a problem with the part of the car that changes electricity from one form to another. It's like when a toy stops working because the battery isn't connected properly.
The code indicates an issue with the DC/AC converter circuit, which is responsible for converting direct current (DC) from the car's battery to alternating current (AC) used by certain electrical components.
The B0129 code is triggered when the vehicle's onboard computer detects an open or faulty circuit in the DC/AC converter associated with the high voltage power outlet 'C'. This converter is crucial for supplying power to various electrical components that require AC power.
• Inoperative power outlet
• Warning light on the dashboard
• Electrical devices not charging or working
• Faulty DC/AC converter
• Damaged wiring or connectors
• Blown fuse in the circuit
DC: Direct Current
AC: Alternating Current
Converter: A device that changes electrical energy from one form to another.
• Check the fuse related to the DC/AC converter circuit.
• Inspect wiring and connectors for damage or disconnection.
• Test the DC/AC converter for proper operation.
• Replace any blown fuses.
• Repair or replace damaged wiring or connectors.
• Replace the faulty DC/AC converter.
• Multimeter
• Screwdriver set
• Wire stripper/crimper
$100 - $300
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect electrical connections.
• Avoid overloading power outlets.
• Keep the vehicle's electrical system maintained.
Electrical System Issue
• Avoid using the affected power outlet until repaired.
• Consult a professional mechanic for diagnosis.
• Regularly check the vehicle's electrical system.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code has been more common in hybrid and electric vehicles due to their complex electrical systems.
Moderate – The issue may not affect driving immediately but should be addressed to prevent further electrical problems.
Operating a vehicle with electrical issues can lead to further damage or safety hazards. Address the issue promptly.
• Vehicle ignition in the ON position.
• Power outlet in use or tested with a device.
The DC/AC converter is typically located near the vehicle's battery or electrical distribution center.
Q: Can I drive with a B0129 code?
A: Yes, but it's recommended to fix the issue soon to avoid further electrical problems.
Q: Will this code affect my car's battery?
A: It could, as the converter is part of the electrical system. Addressing the issue can prevent battery drain.
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