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 has detected a problem with the control pilot circuit, which is part of the charging system for electric vehicles. It's like a phone charger not working properly because of a bad connection.
The P0CF5 code is triggered when the vehicle's control module detects a low voltage or an open circuit in the control pilot circuit, which is used to communicate with the electric vehicle supply equipment (EVSE) during charging.
The control pilot circuit is a communication line between the electric vehicle and the charging station. It helps manage the charging process by signaling the vehicle's charging status and capacity. A 'low' condition indicates that the expected voltage is not being maintained, possibly due to an open circuit, short to ground, or other wiring issues.
• Vehicle not charging
• Charging system warning light on
• Intermittent charging issues
• Faulty charging cable
• Damaged control pilot line
• Faulty charging port
Control Pilot Circuit: A communication line between the electric vehicle and the charging station.
EVSE: Electric Vehicle Supply Equipment, commonly known as a charging station.
• Inspect the charging cable for damage.
• Check the control pilot line for continuity.
• Test the charging port for proper operation.
• Replace damaged charging cable.
• Repair or replace faulty wiring in the control pilot circuit.
• Replace the charging port if defective.
• Multimeter
• OBD-II scanner
• Wiring diagram
$100 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Tesla Model S
• Regularly inspect charging cables for wear and tear.
• Ensure charging ports are clean and free from debris.
• Use quality charging equipment.
Electrical Circuit Issue
• Avoid using damaged charging cables.
• Have regular maintenance checks on the charging system.
Check with the vehicle manufacturer for warranty coverage on the charging system.
This code has become more common with the rise of electric vehicles and the need for reliable charging systems.
Moderate – Charging issues can prevent the vehicle from being used, but it does not pose an immediate safety risk.
Ensure all repairs are conducted by a qualified technician to avoid electrical hazards.
• Vehicle connected to a charging station
• Charging system active
The control pilot circuit is located within the charging system, typically involving the charging port and cable.
Q: Can I drive my car with this code?
A: Yes, but you may not be able to charge the vehicle, which could leave you stranded.
Q: Is this a common issue?
A: It can be common in electric vehicles if charging equipment is not maintained properly.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.