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EnergyFaults — error codes and troubleshooting for energy devices
EV ChargersPulsar Plus
Error 101

Wallbox

Wallbox Error 101

Connection or internal error

Severity

Moderate

Safe to continue?

No

Technician required?

Usually no

Last verified

September 2026

First safe check

Restart the charger at the dedicated circuit breaker using the documented sequence, then reconnect the vehicle.

What does Error 101 mean?

The app reports error 101 for a connection or internal error. The documented remedy is to restart the charger and reconnect, which clears the state in many cases.

Which models use this code?

Verified for

  • Wallbox — Pulsar Plus

Most likely causes

01

Transient internal or connection fault

Manufacturer documented

The unit reports a connection or internal error that a restart clears.

Safe checks you can perform

  1. 1

    Power-cycle the charger

    Switch off at the dedicated breaker, wait, then restore power and let the unit initialise.

  2. 2

    Retry once and observe

    If the code returns on the first attempt after a restart, report it to the manufacturer with the time it appeared.

These steps stay outside the enclosure. Never open high-voltage equipment, bypass safety devices or work on live wiring.

When to stop troubleshooting

Stop and contact a qualified technician if the fault returns immediately, the device smells burnt, visible wiring damage exists, the enclosure is hot to the touch, or the manufacturer specifies professional service.

Can a reset clear this fault?

Documented reset behaviour: yes. Use only the manufacturer-approved restart sequence for this device and never bridge or bypass a safety mechanism to clear a fault.

Related symptoms

Not charging at all

Related fault codes

3 red blinksThermal throttle; current reduced8 red flashesConfigured current incompatible with vehicleRed flashesFault detected; charging haltedSolid blue (over 15 minutes)Soft ground fault detectedSolid red LEDFault detected; station will not chargeError 102Internal relay stuck

Sources

  • Wallbox Support — App Error Codes

    View
    Manufacturer
    Wallbox
    Document version
    —
    Section / page
    App error codes
    Verified
    September 2026

    Error 101 indicates a connection or internal error resolved by restarting the charger.

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Disclaimer

EnergyFaults provides informational troubleshooting guidance. Electrical and high-voltage equipment should only be serviced by qualified professionals where required. Always follow the manufacturer documentation for your exact model.