P0E73Control Pilot Signal High Frequency
- Generic OBD-II code · Powertrain
- How the car detects it
- 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.
- What you may notice
- AC charging refused or stopped shortly after start
- Fault tied to a specific station or cable
- Likely causes
- PossibleElectrical interference or ringing on the pilot line
- PossibleCharging station with a faulty pilot oscillator
- PossibleDamaged charging cable or corroded charge port pin
- RareFaulty pilot input in the on-board charger
- Repair
- Easy · Often possible to do yourself.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.