Chevrolet
Chevrolet 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
Charger will not start charging; vehicle shows ‘Charging Error’ and the wall unit displays E01 shortly after plugging in.
Pilot Signal Communication Fault
E02
Charger displays E02 and refuses to start; vehicle may show ‘Check Power Source’ or ‘Unable to Charge’.
Ground Fault / Leakage Current Detected
E03
Display shows E03 and charging does not start; sometimes occurs immediately when plugging into the vehicle.
Contactor Welded or Contactor Feedback Fault
E04
Charger shows E04 and the vehicle reports ‘Incorrect Voltage’ or ‘Charging Power Reduced’.
Line Voltage Out of Range
E05
Charger displays E05 and will not initiate charging; may occur after a power surge or lightning event.
Control Board Overvoltage / Surge Protection Trip
E06
Charger shows E06 and the vehicle does not detect charging; often associated with very cold or very hot ambient temperatures.
Temperature Sensor Fault / Overtemperature Protection
E07
Display shows E07 and charging stops or will not start; may occur intermittently when the cable is moved.
Proximity Pilot / Latch Switch Fault
E08
Charger shows E08 and the vehicle reports ‘Grounding Issue’ or refuses to charge at this location.
Ground Continuity / Protective Earth Fault
E09
Charger displays E09 and the unit becomes unresponsive or reboots repeatedly.
Internal Power Supply Fault
E10
Charger shows E10 and the maximum charging current is reduced or charging will not start at all.
Current Sensor / CT Fault
E11
Charger displays E11 and Wi‑Fi/app control is unavailable, but basic charging may still work.
Communication Module Fault (Wi‑Fi/Bluetooth)
E12
Charger shows E12 and refuses to charge certain vehicles, while others may work.
EVSE–EV Handshake Protocol Error
E13
Charger displays E13 and the front LEDs flash in a repeating pattern; charging is disabled.
Internal Self-Test Failure
E14
Charger shows E14 and the vehicle reports ‘Charging Paused by Charger’ even though no schedule is set.
Load Management / Demand Response Fault
E15
Charger displays E15 and the front panel or touchscreen is frozen or unresponsive.
User Interface Panel Communication Fault
E16
Charger shows E16 and the vehicle reports ‘Overcurrent’ or charging stops shortly after starting.
Overcurrent Protection Trip
E17
Charger displays E17 and the vehicle shows ‘Check Charging Equipment’; occurs mainly in very cold weather.
Low Temperature Lockout / Sensor Range Error
E18
Charger shows E18 and the vehicle intermittently starts and stops charging without user input.
Intermittent Pilot Signal Instability
E19
Charger displays E19 and the LEDs indicate a fault immediately at power-up, even with no vehicle connected.
Internal Isolation / Insulation Fault
E20
Charger shows E20 and the vehicle reports ‘Charging Station Locked’ or similar; charging is blocked.
Authentication / Access Control Fault
Symptom
Burning smell or visible discoloration around the charger or cable during or after charging.
Thermal Damage / Overheating of Components
Symptom
Charger cable is stiff, cracked, or difficult to bend, especially in cold weather.
Aging or Damaged Charge Cable Insulation
Symptom
Charger clicks repeatedly and starts/stops charging every few seconds.
Intermittent Contactor Operation / Unstable Charging Session
Symptom
Charger completely dead: no lights, no display, and vehicle does not detect connection.
No Power to EV Charger
Symptom
Charger display or LEDs flicker or reset when large appliances in the home turn on.
Supply Voltage Sag / Electrical Interference
Symptom
Charger enclosure vibrates or rattles when the contactor engages or during charging.
Mechanical Vibration / Loose Mounting
Symptom
Charger frequently stops charging when the cable is slightly moved or bumped.
Intermittent Connection in Cable or Handle
Symptom
Charger gets very hot to the touch during normal charging; may reduce current or stop charging.
Overheating of EV Charger Enclosure or Internal Components
Symptom
Charger makes a high-pitched whining noise even when not actively charging.
Standby Power Supply Noise
Symptom
Charger or cable emits a loud humming or buzzing noise during charging.
Excessive Electrical Hum / Vibration
Symptom
Charger powers on but vehicle does not recognize that it is plugged in; no charging icon on vehicle.
No EV Detection / Open Pilot or Proximity Circuit
Symptom
Charger trips the house breaker or GFCI outlet as soon as charging starts.
Nuisance Tripping / Overcurrent or Ground Fault on Circuit
Symptom
Charger’s front LEDs indicate charging, but the vehicle battery percentage does not increase.
False Charging Indication / No Power Transfer
Symptom
Charger’s Wi‑Fi or app connection frequently drops, making remote control unreliable.
Unstable Network Connectivity
Symptom
Charging is much slower than expected; vehicle shows reduced kW even though charger is rated higher.
Reduced Charging Current / Derating
Symptom
Vehicle shows ‘Charging Delayed’ or ‘Waiting for Charger’ but no schedule is set; charger appears idle.
Unintended Delayed Charging / Scheduling Misconfiguration
Symptom
Visible arcing or sparking when plugging or unplugging the J1772 connector from the vehicle.
Arcing at EV Connector
Symptom
Water or condensation visible inside the charger enclosure or on the display window.
Moisture Ingress into EV Charger
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charger will not start charging; vehicle shows ‘Charging Error’ and the wall unit displays E01 shortly after plugging in.
|
Pilot Signal Communication Fault | View Details |
| E02 |
Charger displays E02 and refuses to start; vehicle may show ‘Check Power Source’ or ‘Unable to Charge’.
|
Ground Fault / Leakage Current Detected | View Details |
| E03 |
Display shows E03 and charging does not start; sometimes occurs immediately when plugging into the vehicle.
|
Contactor Welded or Contactor Feedback Fault | View Details |
| E04 |
Charger shows E04 and the vehicle reports ‘Incorrect Voltage’ or ‘Charging Power Reduced’.
|
Line Voltage Out of Range | View Details |
| E05 |
Charger displays E05 and will not initiate charging; may occur after a power surge or lightning event.
|
Control Board Overvoltage / Surge Protection Trip | View Details |
| E06 |
Charger shows E06 and the vehicle does not detect charging; often associated with very cold or very hot ambient temperatures.
|
Temperature Sensor Fault / Overtemperature Protection | View Details |
| E07 |
Display shows E07 and charging stops or will not start; may occur intermittently when the cable is moved.
|
Proximity Pilot / Latch Switch Fault | View Details |
| E08 |
Charger shows E08 and the vehicle reports ‘Grounding Issue’ or refuses to charge at this location.
|
Ground Continuity / Protective Earth Fault | View Details |
| E09 |
Charger displays E09 and the unit becomes unresponsive or reboots repeatedly.
|
Internal Power Supply Fault | View Details |
| E10 |
Charger shows E10 and the maximum charging current is reduced or charging will not start at all.
|
Current Sensor / CT Fault | View Details |
| E11 |
Charger displays E11 and Wi‑Fi/app control is unavailable, but basic charging may still work.
|
Communication Module Fault (Wi‑Fi/Bluetooth) | View Details |
| E12 |
Charger shows E12 and refuses to charge certain vehicles, while others may work.
|
EVSE–EV Handshake Protocol Error | View Details |
| E13 |
Charger displays E13 and the front LEDs flash in a repeating pattern; charging is disabled.
|
Internal Self-Test Failure | View Details |
| E14 |
Charger shows E14 and the vehicle reports ‘Charging Paused by Charger’ even though no schedule is set.
|
Load Management / Demand Response Fault | View Details |
| E15 |
Charger displays E15 and the front panel or touchscreen is frozen or unresponsive.
|
User Interface Panel Communication Fault | View Details |
| E16 |
Charger shows E16 and the vehicle reports ‘Overcurrent’ or charging stops shortly after starting.
|
Overcurrent Protection Trip | View Details |
| E17 |
Charger displays E17 and the vehicle shows ‘Check Charging Equipment’; occurs mainly in very cold weather.
|
Low Temperature Lockout / Sensor Range Error | View Details |
| E18 |
Charger shows E18 and the vehicle intermittently starts and stops charging without user input.
|
Intermittent Pilot Signal Instability | View Details |
| E19 |
Charger displays E19 and the LEDs indicate a fault immediately at power-up, even with no vehicle connected.
|
Internal Isolation / Insulation Fault | View Details |
| E20 |
Charger shows E20 and the vehicle reports ‘Charging Station Locked’ or similar; charging is blocked.
|
Authentication / Access Control Fault | View Details |
| – |
Burning smell or visible discoloration around the charger or cable during or after charging.
|
Thermal Damage / Overheating of Components | View Details |
| – |
Charger cable is stiff, cracked, or difficult to bend, especially in cold weather.
|
Aging or Damaged Charge Cable Insulation | View Details |
| – |
Charger clicks repeatedly and starts/stops charging every few seconds.
|
Intermittent Contactor Operation / Unstable Charging Session | View Details |
| – |
Charger completely dead: no lights, no display, and vehicle does not detect connection.
|
No Power to EV Charger | View Details |
| – |
Charger display or LEDs flicker or reset when large appliances in the home turn on.
|
Supply Voltage Sag / Electrical Interference | View Details |
| – |
Charger enclosure vibrates or rattles when the contactor engages or during charging.
|
Mechanical Vibration / Loose Mounting | View Details |
| – |
Charger frequently stops charging when the cable is slightly moved or bumped.
|
Intermittent Connection in Cable or Handle | View Details |
| – |
Charger gets very hot to the touch during normal charging; may reduce current or stop charging.
|
Overheating of EV Charger Enclosure or Internal Components | View Details |
| – |
Charger makes a high-pitched whining noise even when not actively charging.
|
Standby Power Supply Noise | View Details |
| – |
Charger or cable emits a loud humming or buzzing noise during charging.
|
Excessive Electrical Hum / Vibration | View Details |
| – |
Charger powers on but vehicle does not recognize that it is plugged in; no charging icon on vehicle.
|
No EV Detection / Open Pilot or Proximity Circuit | View Details |
| – |
Charger trips the house breaker or GFCI outlet as soon as charging starts.
|
Nuisance Tripping / Overcurrent or Ground Fault on Circuit | View Details |
| – |
Charger’s front LEDs indicate charging, but the vehicle battery percentage does not increase.
|
False Charging Indication / No Power Transfer | View Details |
| – |
Charger’s Wi‑Fi or app connection frequently drops, making remote control unreliable.
|
Unstable Network Connectivity | View Details |
| – |
Charging is much slower than expected; vehicle shows reduced kW even though charger is rated higher.
|
Reduced Charging Current / Derating | View Details |
| – |
Vehicle shows ‘Charging Delayed’ or ‘Waiting for Charger’ but no schedule is set; charger appears idle.
|
Unintended Delayed Charging / Scheduling Misconfiguration | View Details |
| – |
Visible arcing or sparking when plugging or unplugging the J1772 connector from the vehicle.
|
Arcing at EV Connector | View Details |
| – |
Water or condensation visible inside the charger enclosure or on the display window.
|
Moisture Ingress into EV Charger | View Details |
No matching codes found
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