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 there's a problem with the signal that tells the car how to charge its battery. It's like if your phone charger wasn't working right.
The P0E72 code is triggered when the control pilot signal, which is used in electric vehicles to communicate charging information between the vehicle and the charging station, is detected at a lower frequency than expected.
The control pilot signal is part of the charging system in electric vehicles. It helps manage the charging process by communicating between the vehicle and the charging station. A low frequency in this signal can indicate a malfunction in the charging system, possibly due to wiring issues, connector problems, or a fault in the control module.
• Vehicle not charging
• Warning light on the dashboard
• Error message on the vehicle's display
• Faulty charging cable
• Damaged control pilot wiring
• Malfunctioning charging port
• Faulty control module
Control Pilot Signal: A signal used in electric vehicles to communicate charging status and control the charging process.
Frequency: The rate at which a signal oscillates, measured in hertz (Hz).
• Inspect the charging cable for damage.
• Check the control pilot wiring and connections.
• Test the charging port for faults.
• Use a scan tool to check for additional error codes.
• Replace the charging cable if damaged.
• Repair or replace damaged wiring.
• Replace the faulty charging port.
• Reprogram or replace the control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $500
Moderate
• Chevrolet Volt
• Nissan Leaf
• Tesla Model S
• Regularly inspect charging equipment.
• Ensure connections are secure before charging.
• Avoid using damaged charging cables.
Charging System Issue
• Do not ignore the warning light; get the vehicle checked.
• Use manufacturer-recommended charging equipment.
Check with the vehicle manufacturer for warranty coverage related to the charging system.
This code has become more common with the increase in electric vehicles and the complexity of their charging systems.
Moderate – The vehicle may not charge properly, which can lead to being unable to use the vehicle.
Ensure all repairs are conducted by a qualified technician to prevent electric shock and ensure safety compliance.
• Vehicle connected to a charging station
• Charging process initiated
The control pilot signal is part of the vehicle's charging system, typically located near the charging port.
Q: Can I still drive my car with this code?
A: Yes, but you may not be able to charge the vehicle, which could leave you stranded once the battery is depleted.
Q: Is this a common problem?
A: It can occur in electric vehicles, especially if there are issues with the charging equipment or connections.
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