Audi
Audi EV Home Chargers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Audi home charger will not start charging; vehicle shows ‘Charging Station Error’ and wallbox display shows E01.
Proximity / Control Pilot Signal Fault
E02
Audi EV home charger shows E02 and refuses to start charging; vehicle may indicate ‘Check power supply’ or ‘Charging not possible’.
Line Voltage Out of Range / Supply Voltage Fault
E03
Audi wallbox displays E03 and charging stops or will not start; sometimes occurs intermittently during charging.
Ground Fault / Residual Current Detection Trip
E04
Audi EV charger shows E04 and the contactor does not close; no charging current flows.
Contactor Coil / Power Relay Fault
E05
Audi wallbox displays E05 and charging is limited or disabled; may occur during hot weather or after long charging sessions.
Overtemperature Protection / Thermal Derating
E06
Audi EV charger shows E06 and refuses to start; vehicle may show ‘Locking error’ or ‘Charging station locked’.
Connector Locking Mechanism Fault
E07
Audi wallbox displays E07 and charging stops; may be accompanied by a loud click as the contactor opens.
Overcurrent / Output Overload Protection
E08
Audi EV charger shows E08 and will not start charging; often associated with installation on a three-phase supply.
Phase Loss / Phase Sequence Error
E09
Audi wallbox displays E09 and charging is disabled; often appears after a lightning storm or grid disturbance.
Surge Protection / Internal Self-Test Failure
E10
Audi EV charger shows E10 and refuses to start; app may indicate ‘PEN fault’ or ‘Earth fault’ on some markets.
Protective Earth / Neutral (PEN) Conductor Fault
E11
Audi wallbox displays E11 and the app reports ‘Communication error with vehicle’; charging does not start.
PLC / Communication with Vehicle Failed
E12
Audi EV charger shows E12 and the app indicates ‘Internal memory error’ or ‘Configuration error’.
Non-Volatile Memory / Configuration Corruption
E13
Audi wallbox displays E13 and the app reports ‘Wi-Fi module error’ or ‘Network module not responding’.
Communication Module / Wi-Fi Hardware Fault
E14
Audi EV charger shows E14 and the app indicates ‘RFID reader error’ or ‘Authentication module fault’; RFID cards are not recognized.
RFID Authentication Reader Fault
E15
Audi wallbox displays E15 and the app reports ‘Load management error’ or ‘Backend communication fault’ in installations with dynamic load management.
Load Management / External Meter Communication Fault
E16
Audi EV charger shows E16 and the app indicates ‘Internal fan error’ or ‘Cooling system fault’.
Cooling Fan Failure
E17
Audi wallbox displays E17 and the app reports ‘Display error’ or the front LEDs/screen are blank while the unit still has power.
HMI / Display Module Fault
E18
Audi EV charger shows E18 and the app indicates ‘Internal clock error’ or scheduled charging does not work.
Real-Time Clock (RTC) / Timekeeping Fault
E19
Audi wallbox displays E19 and the app reports ‘Internal self-test failed’ at startup; charging is disabled.
General Self-Test / Internal Diagnostics Failure
E20
Audi EV charger shows E20 and the app indicates ‘Firmware mismatch’ or ‘Module version conflict’.
Firmware / Module Version Incompatibility
Symptom
Audi EV charger intermittently loses connection to the Audi backend or app, but local charging continues.
Backend Communication Instability
Symptom
Audi EV charger powers on but will not start charging; vehicle displays ‘Charging station not ready’ with no specific error code on the charger.
Standby State / EVSE Not Reaching Ready Mode
Symptom
Audi EV charger starts charging but stops after a few minutes without an error code; vehicle shows ‘Charging interrupted’.
Intermittent Output Drop / Thermal or Supply Instability
Symptom
Audi EV charger trips the upstream RCD/RCBO or main breaker whenever charging is started.
Nuisance Tripping / Earth Leakage or Overcurrent
Symptom
Audi EV charger’s internal fan runs at full speed constantly, even when not charging.
Cooling Control / Fan Stuck On
Symptom
Audi EV charger’s RFID card reader intermittently fails to recognize cards, requiring multiple attempts.
Intermittent RFID Reader Performance
Symptom
Audi EV charger’s scheduled charging does not start at the programmed time, but manual charging works.
Scheduling / Time Control Malfunction
Symptom
Audi EV charger’s Type 2 connector is difficult to insert or remove from the vehicle inlet.
Mechanical Wear / Deformation of Connector
Symptom
Audi EV home charger does not power on at all; no LEDs or display, and the app cannot find the charger.
No Mains Power / Internal Power Supply Failure
Symptom
Audi wallbox emits a burning smell or shows discoloration on the housing near the cable entry.
Localized Overheating / Potential Fire Hazard
Symptom
Audi wallbox enclosure vibrates or rattles when the contactor closes or during charging.
Mechanical Vibration / Loose Mounting
Symptom
Audi wallbox front LEDs or display are very dim or flicker during operation.
HMI Power / Backlight Instability
Symptom
Audi wallbox makes a loud buzzing or humming noise during charging.
Acoustic Noise from Contactor or Transformer
Symptom
Audi wallbox’s Wi-Fi connection is unstable or frequently drops, causing remote control and monitoring issues.
Unstable Network Connectivity
Symptom
Charging cable gets unusually hot during use with the Audi home charger, even at normal current levels.
Overheating Charging Cable / High Contact Resistance
Symptom
Water or condensation visible inside the Audi wallbox housing or behind the front cover.
Moisture Ingress / Compromised Sealing
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Audi home charger will not start charging; vehicle shows ‘Charging Station Error’ and wallbox display shows E01.
|
Proximity / Control Pilot Signal Fault | View Details |
| E02 |
Audi EV home charger shows E02 and refuses to start charging; vehicle may indicate ‘Check power supply’ or ‘Charging not possible’.
|
Line Voltage Out of Range / Supply Voltage Fault | View Details |
| E03 |
Audi wallbox displays E03 and charging stops or will not start; sometimes occurs intermittently during charging.
|
Ground Fault / Residual Current Detection Trip | View Details |
| E04 |
Audi EV charger shows E04 and the contactor does not close; no charging current flows.
|
Contactor Coil / Power Relay Fault | View Details |
| E05 |
Audi wallbox displays E05 and charging is limited or disabled; may occur during hot weather or after long charging sessions.
|
Overtemperature Protection / Thermal Derating | View Details |
| E06 |
Audi EV charger shows E06 and refuses to start; vehicle may show ‘Locking error’ or ‘Charging station locked’.
|
Connector Locking Mechanism Fault | View Details |
| E07 |
Audi wallbox displays E07 and charging stops; may be accompanied by a loud click as the contactor opens.
|
Overcurrent / Output Overload Protection | View Details |
| E08 |
Audi EV charger shows E08 and will not start charging; often associated with installation on a three-phase supply.
|
Phase Loss / Phase Sequence Error | View Details |
| E09 |
Audi wallbox displays E09 and charging is disabled; often appears after a lightning storm or grid disturbance.
|
Surge Protection / Internal Self-Test Failure | View Details |
| E10 |
Audi EV charger shows E10 and refuses to start; app may indicate ‘PEN fault’ or ‘Earth fault’ on some markets.
|
Protective Earth / Neutral (PEN) Conductor Fault | View Details |
| E11 |
Audi wallbox displays E11 and the app reports ‘Communication error with vehicle’; charging does not start.
|
PLC / Communication with Vehicle Failed | View Details |
| E12 |
Audi EV charger shows E12 and the app indicates ‘Internal memory error’ or ‘Configuration error’.
|
Non-Volatile Memory / Configuration Corruption | View Details |
| E13 |
Audi wallbox displays E13 and the app reports ‘Wi-Fi module error’ or ‘Network module not responding’.
|
Communication Module / Wi-Fi Hardware Fault | View Details |
| E14 |
Audi EV charger shows E14 and the app indicates ‘RFID reader error’ or ‘Authentication module fault’; RFID cards are not recognized.
|
RFID Authentication Reader Fault | View Details |
| E15 |
Audi wallbox displays E15 and the app reports ‘Load management error’ or ‘Backend communication fault’ in installations with dynamic load management.
|
Load Management / External Meter Communication Fault | View Details |
| E16 |
Audi EV charger shows E16 and the app indicates ‘Internal fan error’ or ‘Cooling system fault’.
|
Cooling Fan Failure | View Details |
| E17 |
Audi wallbox displays E17 and the app reports ‘Display error’ or the front LEDs/screen are blank while the unit still has power.
|
HMI / Display Module Fault | View Details |
| E18 |
Audi EV charger shows E18 and the app indicates ‘Internal clock error’ or scheduled charging does not work.
|
Real-Time Clock (RTC) / Timekeeping Fault | View Details |
| E19 |
Audi wallbox displays E19 and the app reports ‘Internal self-test failed’ at startup; charging is disabled.
|
General Self-Test / Internal Diagnostics Failure | View Details |
| E20 |
Audi EV charger shows E20 and the app indicates ‘Firmware mismatch’ or ‘Module version conflict’.
|
Firmware / Module Version Incompatibility | View Details |
| – |
Audi EV charger intermittently loses connection to the Audi backend or app, but local charging continues.
|
Backend Communication Instability | View Details |
| – |
Audi EV charger powers on but will not start charging; vehicle displays ‘Charging station not ready’ with no specific error code on the charger.
|
Standby State / EVSE Not Reaching Ready Mode | View Details |
| – |
Audi EV charger starts charging but stops after a few minutes without an error code; vehicle shows ‘Charging interrupted’.
|
Intermittent Output Drop / Thermal or Supply Instability | View Details |
| – |
Audi EV charger trips the upstream RCD/RCBO or main breaker whenever charging is started.
|
Nuisance Tripping / Earth Leakage or Overcurrent | View Details |
| – |
Audi EV charger’s internal fan runs at full speed constantly, even when not charging.
|
Cooling Control / Fan Stuck On | View Details |
| – |
Audi EV charger’s RFID card reader intermittently fails to recognize cards, requiring multiple attempts.
|
Intermittent RFID Reader Performance | View Details |
| – |
Audi EV charger’s scheduled charging does not start at the programmed time, but manual charging works.
|
Scheduling / Time Control Malfunction | View Details |
| – |
Audi EV charger’s Type 2 connector is difficult to insert or remove from the vehicle inlet.
|
Mechanical Wear / Deformation of Connector | View Details |
| – |
Audi EV home charger does not power on at all; no LEDs or display, and the app cannot find the charger.
|
No Mains Power / Internal Power Supply Failure | View Details |
| – |
Audi wallbox emits a burning smell or shows discoloration on the housing near the cable entry.
|
Localized Overheating / Potential Fire Hazard | View Details |
| – |
Audi wallbox enclosure vibrates or rattles when the contactor closes or during charging.
|
Mechanical Vibration / Loose Mounting | View Details |
| – |
Audi wallbox front LEDs or display are very dim or flicker during operation.
|
HMI Power / Backlight Instability | View Details |
| – |
Audi wallbox makes a loud buzzing or humming noise during charging.
|
Acoustic Noise from Contactor or Transformer | View Details |
| – |
Audi wallbox’s Wi-Fi connection is unstable or frequently drops, causing remote control and monitoring issues.
|
Unstable Network Connectivity | View Details |
| – |
Charging cable gets unusually hot during use with the Audi home charger, even at normal current levels.
|
Overheating Charging Cable / High Contact Resistance | View Details |
| – |
Water or condensation visible inside the Audi wallbox housing or behind the front cover.
|
Moisture Ingress / Compromised Sealing | View Details |
No matching codes found
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