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 that controls the flow of coolant in the car's battery charger. It's like a valve that isn't working right, and it might be stuck open.
The P0DFF code indicates that the control circuit for the battery charger coolant control valve is experiencing a high voltage condition.
The P0DFF code is triggered when the Powertrain Control Module (PCM) detects a high voltage condition in the control circuit of the battery charger coolant control valve. This valve is responsible for regulating the flow of coolant to the battery charger to maintain optimal temperature. A high voltage condition typically indicates an electrical fault such as an open circuit or a short to power.
• Check Engine Light is on
• Overheating battery charger
• Reduced charging efficiency
• Faulty battery charger coolant control valve
• Open or shorted wiring in the control circuit
• Faulty PCM or control module
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the battery charger coolant control valve for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the battery charger coolant control valve if faulty.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regular inspection of the coolant system.
• Keeping the electrical system in good condition.
• Timely maintenance of the battery charging system.
Electrical Circuit Issue
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult with a professional mechanic for an accurate diagnosis.
Repairs may be covered under the vehicle's powertrain warranty if applicable.
This code is relatively uncommon and typically associated with hybrid or electric vehicles.
Moderate – Should be addressed soon to prevent battery charging issues.
Driving with this code active may lead to reduced battery performance and potential overheating, posing a safety risk.
• Engine running
• Battery charger active
The battery charger coolant control valve is typically located near the battery charger or cooling system components.
Q: Can I drive with a P0DFF code?
A: It's not recommended to drive with this code active as it can lead to battery charging issues and overheating.
Q: How do I clear a P0DFF code?
A: The code can be cleared with an OBD-II scanner after the issue is fixed, but it may return if the underlying problem isn't resolved.
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