P0E73 is set when the control pilot pulses from the charging station arrive faster than the nominal 1 kHz. Above the permitted band the vehicle can no longer be sure that it decodes the duty cycle, and with it the allowed charging current, correctly; in practice it refuses or ends the session. Short spikes or ringing on the pilot line can mimic extra edges and be counted as a higher frequency, so cable condition and nearby interference matter as much as the station itself. No manufacturer documents P0E73 publicly. Simulation notes from Typhoon HIL describe the station side of this interface, a PWM signal of ±12 V at 1 kHz evaluated by a resistor network in the car. If the fault follows the vehicle across several stations, check the charge port and the charger's input. P0E72 is the low case.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Symptoms
- AC charging refused or stopped shortly after start
- Fault tied to a specific station or cable
Most likely causes
- Electrical interference or ringing on the pilot line
- Charging station with a faulty pilot oscillator
- Damaged charging cable or corroded charge port pin
- Faulty pilot input in the on-board charger
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: easy
What each character of P0E73 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- E: Subsystem depends on the code range
- 73: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0E73?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P0E73?
The most common causes are: electrical interference or ringing on the pilot line; charging station with a faulty pilot oscillator; damaged charging cable or corroded charge port pin.
Related codes
- P0E72Control Pilot Signal Low Frequency
- P0CF4Control Pilot Circuit Range/Performance
- P0CF6Control Pilot Circuit High
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.