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 the car's computer thinks the battery charger is getting too much power from a sensor. It's like when you plug a toy into a socket that gives too much electricity.
The P0EFE code is triggered when the vehicle's powertrain control module (PCM) detects a higher than expected voltage from the Battery Charger A Input Voltage Sensor C.
The Battery Charger A Input Voltage Sensor C Circuit High code indicates that the voltage signal from the sensor is above the expected range. This could be due to a fault in the sensor, wiring, or the battery charger itself. The PCM monitors the voltage to ensure the battery is charged correctly and efficiently.
• Battery warning light on dashboard
• Battery not charging properly
• Possible electrical issues in the vehicle
• Faulty battery charger
• Damaged or faulty voltage sensor
• Wiring issues such as shorts or open circuits
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the battery charger and voltage sensor for damage.
• Check wiring and connections for any signs of damage or corrosion.
• Replace the faulty voltage sensor.
• Repair or replace damaged wiring.
• Replace the battery charger if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regularly inspect battery and charging system.
• Ensure all electrical connections are clean and secure.
• Avoid overloading the electrical system.
Sensor Issue
• Have the vehicle inspected by a professional if the battery light comes on.
• Avoid using high-power electrical accessories until the issue is resolved.
Check with the vehicle manufacturer for warranty coverage on battery and charging system components.
This code is more common in hybrid and electric vehicles due to their complex charging systems.
Moderate – It is important to address this issue to prevent battery charging problems.
Driving with a malfunctioning charging system can lead to battery failure, which may leave you stranded.
• Vehicle in 'On' position
• Battery charger connected and operational
The battery charger and voltage sensor are typically located near the vehicle's battery or under the hood.
Q: Can I drive with a P0EFE code?
A: It's not recommended to drive for long periods as the battery might not charge properly.
Q: Will this code drain my battery?
A: Yes, if not addressed, it can lead to insufficient charging and battery drain.
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