P0E71
Control Pilot Signal Frequency Too High
The control pilot PWM frequency from the EVSE is too high. SAE J1772 requires 1 kHz +/- tolerance. The on-board charger negotiates voltage, current and safety with the EVSE; a fault interrupts charging or limits it to AC slow-charge despite a DC fast charger being attached.
The control pilot PWM frequency from the EVSE is too high. SAE J1772 requires 1 kHz +/- tolerance. The on-board charger negotiates voltage, current and safety with the EVSE; a fault interrupts charging or limits it to AC slow-charge despite a DC fast charger being attached.
Common causes
- high
EVSE PWM above 1 kHz spec
One of the most commonly reported causes for this code — check this first.
Typical part cost: $110-880
- medium
EVSE oscillator drift
A plausible cause — test and verify before replacing parts.
Typical part cost: $110-880
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P0E71 mean?
P0E71 means "Control Pilot Signal Frequency Too High". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0E71?
evse pwm above 1 khz spec; evse oscillator drift — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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