Volvo EV Home Chargers Error Codes

E01

Charger will not start charging; vehicle connected but no charging session begins; red status LED and E01 shown in app or on wallbox display.

Proximity / Pilot Signal Communication Failure

E02

Charger displays E02 and refuses to start; vehicle reports charging station error; relay click may be heard briefly then drops out.

Contactor / Relay Weld Detection or Stuck Relay

E03

Charger shows E03 and will not energize; vehicle may show 'ground fault' or 'charging station error'; charging stops immediately after plug‑in.

Ground Fault / Residual Current Device (RCD) Trip

E04

Charger displays E04 or 'Overcurrent' and stops charging; may occur a few seconds after starting; breaker may trip occasionally.

Overcurrent Protection Trip / Current Sensor Fault

E05

Charger shows E05 or 'Overvoltage' and refuses to charge; may occur during grid fluctuations or storms.

Input Overvoltage Protection Activation

E06

Charger displays E06 or 'Undervoltage' and does not start charging; may occur when other large loads in the home turn on.

Input Undervoltage / Brownout Detection

E07

Charger shows E07 or 'Ground Missing' / 'PE Fault'; charging is disabled; status LED may flash amber/red.

Protective Earth (PE) Continuity Fault

E08

Charger displays E08 or 'Overtemperature'; charging stops mid‑session or will not start until unit cools.

Internal Overtemperature Protection

E09

Charger shows E09 or 'Communication Error'; Volvo Cars app cannot control or see charger status; local charging may or may not work.

Network / Backend Communication Failure

E10

Charger displays E10 or 'Lock Fault'; integrated cable lock or connector latch does not engage or release properly.

Connector Locking Mechanism Failure

E11

Charger shows E11 or 'Phase Error'; on three‑phase installations, charging may be reduced or disabled.

Phase Loss / Phase Sequence Fault

E12

Charger displays E12 or 'Pilot Short'; charging is disabled immediately after plugging in.

Control Pilot (CP) Short to Ground or Power

E13

Charger shows E13 or 'Insulation Fault'; charging is blocked; may occur after heavy rain or washing the car.

Insulation Resistance Low Between Live Conductors and Earth

E14

Charger displays E14 or 'Meter Error'; energy readings in the Volvo app are incorrect or unavailable; charging may still work.

Internal Energy Meter / Measurement Failure

E15

Charger shows E15 or 'RFID Error'; RFID cards or tags are not recognized; charging authorization fails.

RFID Reader / Authorization Module Failure

E16

Charger displays E16 or 'Load Control Error'; dynamic load management with home energy meter does not function; charging may be limited or disabled.

External Load Management / Modbus Communication Fault

E17

Charger shows E17 or 'Firmware Error'; unit may reboot repeatedly or refuse to start charging.

Firmware Corruption / Bootloader Failure

E18

Charger displays E18 or 'Internal Fault'; generic hardware error with no further detail; charging disabled.

Generic Internal Hardware Self‑Test Failure

E19

Charger shows E19 or 'Vehicle Error'; charger appears ready but refuses to start with a specific vehicle; other EVs may charge normally.

Vehicle‑Side Charging Protocol Incompatibility or Fault

E20

Charger displays E20 or 'Schedule Lock'; unit will not start charging outside programmed times even when plugged in.

Charging Schedule / Timer Lockout

Symptom

Charger completely dead: no LEDs, no display, no response when vehicle is plugged in.

No Power / Input Supply Failure

Symptom

Charger emits a persistent burning or electrical smell during or after charging, even if it appears to function.

Overheating Component / Insulation Breakdown

Symptom

Charger makes loud humming or buzzing noises during charging, louder than normal relay clicks or faint transformer hum.

Excessive Electromagnetic or Mechanical Vibration Noise

Symptom

Charger or cable becomes very hot to the touch during normal charging, even at rated current; plastic may smell warm.

Overheating Connector or Internal Wiring

Symptom

Charger powers on but will not start charging; status LED remains solid or blinking blue/white; no explicit error code shown.

Standby Without Charge / Pilot Negotiation Failure

Symptom

Charger trips the upstream RCD/GFCI or main breaker as soon as charging starts, but no code is shown on the charger.

External RCD / Breaker Nuisance Trip

Symptom

Charger’s front button (start/stop or function button) is unresponsive or sticks mechanically.

Front Panel Button / Switch Failure

Symptom

Charger’s front LEDs blink in an undocumented pattern and the unit behaves erratically, but no code is shown in the app.

LED / Status Indication Mismatch or Minor Firmware Glitch

Symptom

Charger’s internal fan (if equipped) runs constantly at high speed or never runs, regardless of temperature.

Cooling Fan Control Fault

Symptom

Charging starts but stops after a few minutes without any visible error; user must unplug and replug to resume.

Intermittent Charging Interruption

Symptom

Dynamic load management with the home energy meter appears inaccurate: charger reduces current too much or not enough, but no explicit error is shown.

Load Management Calibration / Configuration Issue

Symptom

Integrated cable holster or connector dock on the Volvo charger is loose, cracked, or does not hold the plug securely.

Mechanical Damage to Cable Management / Holster

Symptom

Visible arcing or sparking when connecting or disconnecting the Type 2 plug from the vehicle.

Live Disconnection / Contactor Timing Fault

Symptom

Volvo app shows incorrect or delayed charging status; charger appears fine locally but remote control is unreliable.

Cloud / App Synchronization Delay

Symptom

Water or condensation visible inside the transparent parts of the charger or dripping from the bottom of the housing.

Moisture Ingress / Compromised IP Rating