Code result
P0E71
Control Pilot Signal Frequency Too High
Moderate severity
What it means
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.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
EVSE PWM above 1 kHz spec
highOne of the most commonly reported causes for this code — check this first.
EVSE oscillator drift
mediumA plausible cause — test and verify before replacing parts.
Related help
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