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 detected a problem with the signal that tells the car how to charge its battery. It's like when a remote control sends a signal to a toy car, but the signal is too fast and the toy car gets confused.
The P0E73 code indicates that the frequency of the control pilot signal, which is used in electric vehicles to communicate charging status and control, is higher than expected.
The control pilot signal is part of the charging system in electric vehicles. It communicates between the vehicle and the charging station to manage the charging process. A high frequency in this signal can disrupt the charging process, causing issues with battery charging efficiency and safety.
• Charging process fails to start
• Charging process is interrupted
• Warning light on the dashboard
• Faulty charging cable
• Malfunctioning charging station
• Damaged control pilot circuit
Control Pilot Signal: A signal used in electric vehicles to communicate charging status and control between the vehicle and the charging station.
Frequency: The rate at which a signal oscillates, measured in hertz (Hz).
• Inspect the charging cable for damage.
• Test the charging station with another vehicle.
• Check the control pilot circuit for faults.
• Replace the faulty charging cable.
• Repair or replace the charging station.
• Repair the control pilot circuit.
• Multimeter
• Diagnostic scanner
• Circuit tester
$100 - $500
Moderate
• Nissan Leaf
• Chevrolet Bolt
• Tesla Model 3
• Regular inspection of charging cables.
• Use certified charging stations.
• Regular maintenance of the vehicle's electrical system.
Charging System Issue
• Avoid using damaged charging cables.
• Ensure the charging station is compatible with your vehicle.
Check with your vehicle's manufacturer as some charging system components may be covered under warranty.
This code has been more common with the increase in electric vehicles and the use of fast charging stations.
Moderate – It's important to address this issue to ensure proper charging of the vehicle.
Failure to address this issue may lead to charging inefficiencies and potential safety hazards.
• Vehicle connected to a charging station
• Charging process initiated
The control pilot circuit is typically located within the vehicle's charging system, often near the charging port.
Q: Can I still drive my car with this code?
A: Yes, but you may experience issues with charging the vehicle.
Q: Will this code affect my car's battery?
A: It can affect the efficiency of charging, which may indirectly impact battery health over time.
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.