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 your car that changes electricity from one form to another, like a converter. It's like when a toy isn't working because the battery connection is loose or broken.
The code B0128 indicates an issue with the circuit for the DC/AC converter, specifically related to the high voltage power outlet labeled as 'B'. This could mean the circuit is open or not functioning properly.
The B0128 code is triggered when the vehicle's onboard diagnostics system detects an open circuit or a malfunction in the DC/AC converter's high voltage power outlet 'B'. This converter is responsible for converting direct current (DC) from the vehicle's battery to alternating current (AC) for various electrical components.
• 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 power outlet circuit
DC: Direct Current
AC: Alternating Current
• Inspect the DC/AC converter for visible damage.
• Check the wiring and connectors for signs of wear or disconnection.
• Test the fuse associated with the power outlet circuit.
• Replace the faulty DC/AC converter.
• Repair or replace damaged wiring or connectors.
• Replace the blown fuse.
• Multimeter
• Screwdriver set
• Wire strippers
$100 - $300
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect electrical connections.
• Avoid overloading power outlets.
• Schedule routine vehicle maintenance.
Electrical Circuit Issue
• Avoid using the affected power outlet until repaired.
• Consult with a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer as electrical components may be covered under warranty.
This code has been reported in hybrid and electric vehicles where DC/AC converters are commonly used.
Moderate – While not immediately critical, it should be addressed to ensure proper functioning of electrical components.
Driving with electrical issues can lead to further damage or electrical failures. Always ensure repairs are conducted by a qualified technician.
• Vehicle is powered on.
• DC/AC converter is active.
The DC/AC converter is typically located near the vehicle's battery or within the engine compartment.
Q: Can I drive my car with a B0128 code?
A: Yes, but it's recommended to fix the issue soon to avoid further electrical problems.
Q: Will this affect my car's battery?
A: It may not directly affect the battery, but unresolved issues can lead to other electrical problems.
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