Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberE / 71
Possible causes
- EVSE PWM above 1 kHz spec high
- EVSE oscillator drift medium
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–800 €
- Estimated time: 0.5–3 h
- Component: control pilot signal
- Component: evse
- MIL / check engine light
Sources
References
sae:J2012