Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer has detected a problem with the sensor that checks the voltage coming into the battery charger. It's like if your phone charger wasn't getting enough power from the wall outlet.
The P0EFD code is triggered when the vehicle's control module detects a low voltage condition in the input voltage sensor circuit for Battery Charger A.
The P0EFD code indicates that the input voltage sensor circuit for Battery Charger A is reading a voltage that is below the expected range. This could be due to a fault in the sensor, wiring issues, or a problem with the battery charger itself.
• Check engine light is on
• Battery not charging properly
• Vehicle may not start
• Faulty input voltage sensor
• Wiring issues or poor connections
• Defective battery charger
OBD-II: On-Board Diagnostics, a standardized system for vehicle diagnostics.
Multimeter: A tool used to measure electrical voltage, current, and resistance.
• Use a scan tool to check for additional codes.
• Inspect the wiring and connections to the input voltage sensor.
• Test the input voltage sensor for proper operation.
• Repair or replace faulty wiring or connections.
• Replace the input voltage sensor if defective.
• Replace the battery charger if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Prius
• Chevrolet Volt
• Nissan Leaf
• Regularly inspect battery and charging system.
• Ensure all electrical connections are secure.
• Perform routine maintenance as recommended by the manufacturer.
Sensor Issue
• Avoid using unnecessary electrical accessories until the issue is resolved.
• Have the vehicle inspected by a professional if unsure about the repairs.
Check with the vehicle manufacturer for warranty coverage on electrical components.
This code is relatively uncommon and typically associated with hybrid or electric vehicles.
Moderate – The vehicle may still operate, but the battery may not charge properly.
Driving with a faulty charging system can lead to battery failure and vehicle breakdown.
• Vehicle in 'On' position
• Battery charger connected
The input voltage sensor is typically located near the battery charger or within the charging system module.
Q: Can I drive with a P0EFD code?
A: It's not recommended as the battery may not charge properly, leading to potential vehicle shutdown.
Q: How can I reset the P0EFD code?
A: The code can be reset using an OBD-II scanner after addressing the underlying issue.
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