Zencar
Zencar 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; display shows E01 immediately after plugging into the vehicle.
Pilot Signal Communication Fault
E02
Charger displays E02 and refuses to start; vehicle may show 'charging error' or 'check power source'.
Ground Fault / Leakage Current Detected
E03
Display shows E03 and charging stops shortly after starting, or will not start at all.
Overcurrent / Output Overload Protection Trip
E04
Charger shows E04 and does not energize; sometimes occurs after a lightning storm or power surge.
Input Overvoltage / Undervoltage Protection
E05
Display shows E05 and charging stops; charger may click repeatedly as it tries to start.
Contactor / Relay Welded or Open Fault
E06
Charger displays E06 and refuses to start; often associated with incorrect wiring or missing ground.
Protective Earth (PE) / Ground Fault or Missing Ground
E07
Charger shows E07; unit may feel warm and internal fan (if equipped) may run at high speed.
Overtemperature Protection (Internal Electronics)
E08
Display shows E08 and charging does not start; often occurs when using adapters or extension cords.
Line Wiring / Phase Detection Error
E09
Charger shows E09; vehicle may not recognize the charger or shows 'charging station error'.
Proximity / Lock Switch Fault (Connector Proximity Pilot)
E10
Charger displays E10 and will not start; often after a firmware update or power event.
Internal Communication / Firmware Integrity Error
E11
Charger shows E11; Wi-Fi or app connection may fail and charging may be disabled.
Network / Communication Module Fault
E12
Charger displays E12; unit may start then immediately stop charging.
Vehicle Diode / Pilot Line Short Detection
E13
Charger shows E13; display may indicate 'relay check failed' or similar.
Self-Test / Relay Feedback Error
E14
Charger displays E14; often associated with very low ambient temperatures or sensor issues.
Temperature Sensor Fault (Open/Short)
E15
Charger shows E15; charging may stop intermittently with no obvious pattern.
Internal Power Supply Instability
E16
Charger displays E16; unit may not recognize when the vehicle is connected or disconnected.
Plug-In Detection / Socket Sensor Fault (for socketed models)
E17
Charger shows E17; display may indicate 'card error' or 'authentication failed' on RFID-enabled models.
RFID Authentication / Reader Fault
E18
Charger displays E18; charging stops when scheduled or smart-charging features are used.
Smart Charging / Load Management Fault
E19
Charger shows E19; display may indicate 'meter error' on models with internal kWh metering.
Internal Energy Meter Fault
E20
Charger displays E20; unit may not respond to touch buttons or screen input.
User Interface / Keypad Fault
Symptom
Breaker feeding the Zencar charger trips immediately or shortly after starting a charge.
Circuit Breaker Tripping Under Load
Symptom
Charger completely dead: no lights, no display, no relay click when powered; breaker is ON.
No Power / Dead Unit
Symptom
Charger display is on but is very dim, flickers, or shows garbled characters.
Display Power / Signal Fault
Symptom
Charger emits a loud buzzing or humming noise during operation.
Acoustic Noise from Contactor or Transformer
Symptom
Charger enclosure or connector shows signs of water ingress (condensation, rust, or water droplets).
Moisture Ingress / IP Seal Failure
Symptom
Charger enclosure vibrates or rattles when the contactor pulls in or during charging.
Mechanical Vibration / Loose Mounting
Symptom
Charger gets very hot to the touch during normal charging; may stop charging on hot days without showing a code.
Overheating / Thermal Stress Without Error Code
Symptom
Charger intermittently stops charging and then resumes on its own; no error code is stored.
Intermittent Charging / Dropouts
Symptom
Charger powers on (display lights) but will not start charging; no error code shown on screen.
No Charge Start / Standby Only
Symptom
Charger randomly reboots or restarts during charging sessions without user input.
Unexpected Resets / Brownouts
Symptom
Charger shows significantly inaccurate kWh or current readings compared to other meters.
Metering Inaccuracy
Symptom
Charger’s cable insulation becomes stiff, cracked, or discolored over time.
Aging / UV or Thermal Degradation of Cable
Symptom
Charger’s door or cover does not close or latch properly, leaving internal parts exposed.
Mechanical Latch / Enclosure Fault
Symptom
Charger’s front panel or connector has a burnt plastic smell even if it still operates.
Overheating Plastic Components
Symptom
Charger’s RFID card reader sometimes fails to recognize cards, requiring multiple attempts.
Intermittent RFID Reading
Symptom
Charger’s scheduled charging or timer function does not start charging at the programmed time.
Timer / Scheduling Malfunction
Symptom
Charger’s Wi-Fi or app connection is unreliable; charging may still work manually.
Unstable Wireless Connectivity
Symptom
Visible arcing, sparking, or burn marks at the vehicle connector when plugging in or during charging.
Connector Arcing / Poor Contact
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charger will not start charging; display shows E01 immediately after plugging into the vehicle.
|
Pilot Signal Communication Fault | View Details |
| E02 |
Charger displays E02 and refuses to start; vehicle may show 'charging error' or 'check power source'.
|
Ground Fault / Leakage Current Detected | View Details |
| E03 |
Display shows E03 and charging stops shortly after starting, or will not start at all.
|
Overcurrent / Output Overload Protection Trip | View Details |
| E04 |
Charger shows E04 and does not energize; sometimes occurs after a lightning storm or power surge.
|
Input Overvoltage / Undervoltage Protection | View Details |
| E05 |
Display shows E05 and charging stops; charger may click repeatedly as it tries to start.
|
Contactor / Relay Welded or Open Fault | View Details |
| E06 |
Charger displays E06 and refuses to start; often associated with incorrect wiring or missing ground.
|
Protective Earth (PE) / Ground Fault or Missing Ground | View Details |
| E07 |
Charger shows E07; unit may feel warm and internal fan (if equipped) may run at high speed.
|
Overtemperature Protection (Internal Electronics) | View Details |
| E08 |
Display shows E08 and charging does not start; often occurs when using adapters or extension cords.
|
Line Wiring / Phase Detection Error | View Details |
| E09 |
Charger shows E09; vehicle may not recognize the charger or shows 'charging station error'.
|
Proximity / Lock Switch Fault (Connector Proximity Pilot) | View Details |
| E10 |
Charger displays E10 and will not start; often after a firmware update or power event.
|
Internal Communication / Firmware Integrity Error | View Details |
| E11 |
Charger shows E11; Wi-Fi or app connection may fail and charging may be disabled.
|
Network / Communication Module Fault | View Details |
| E12 |
Charger displays E12; unit may start then immediately stop charging.
|
Vehicle Diode / Pilot Line Short Detection | View Details |
| E13 |
Charger shows E13; display may indicate 'relay check failed' or similar.
|
Self-Test / Relay Feedback Error | View Details |
| E14 |
Charger displays E14; often associated with very low ambient temperatures or sensor issues.
|
Temperature Sensor Fault (Open/Short) | View Details |
| E15 |
Charger shows E15; charging may stop intermittently with no obvious pattern.
|
Internal Power Supply Instability | View Details |
| E16 |
Charger displays E16; unit may not recognize when the vehicle is connected or disconnected.
|
Plug-In Detection / Socket Sensor Fault (for socketed models) | View Details |
| E17 |
Charger shows E17; display may indicate 'card error' or 'authentication failed' on RFID-enabled models.
|
RFID Authentication / Reader Fault | View Details |
| E18 |
Charger displays E18; charging stops when scheduled or smart-charging features are used.
|
Smart Charging / Load Management Fault | View Details |
| E19 |
Charger shows E19; display may indicate 'meter error' on models with internal kWh metering.
|
Internal Energy Meter Fault | View Details |
| E20 |
Charger displays E20; unit may not respond to touch buttons or screen input.
|
User Interface / Keypad Fault | View Details |
| – |
Breaker feeding the Zencar charger trips immediately or shortly after starting a charge.
|
Circuit Breaker Tripping Under Load | View Details |
| – |
Charger completely dead: no lights, no display, no relay click when powered; breaker is ON.
|
No Power / Dead Unit | View Details |
| – |
Charger display is on but is very dim, flickers, or shows garbled characters.
|
Display Power / Signal Fault | View Details |
| – |
Charger emits a loud buzzing or humming noise during operation.
|
Acoustic Noise from Contactor or Transformer | View Details |
| – |
Charger enclosure or connector shows signs of water ingress (condensation, rust, or water droplets).
|
Moisture Ingress / IP Seal Failure | View Details |
| – |
Charger enclosure vibrates or rattles when the contactor pulls in or during charging.
|
Mechanical Vibration / Loose Mounting | View Details |
| – |
Charger gets very hot to the touch during normal charging; may stop charging on hot days without showing a code.
|
Overheating / Thermal Stress Without Error Code | View Details |
| – |
Charger intermittently stops charging and then resumes on its own; no error code is stored.
|
Intermittent Charging / Dropouts | View Details |
| – |
Charger powers on (display lights) but will not start charging; no error code shown on screen.
|
No Charge Start / Standby Only | View Details |
| – |
Charger randomly reboots or restarts during charging sessions without user input.
|
Unexpected Resets / Brownouts | View Details |
| – |
Charger shows significantly inaccurate kWh or current readings compared to other meters.
|
Metering Inaccuracy | View Details |
| – |
Charger’s cable insulation becomes stiff, cracked, or discolored over time.
|
Aging / UV or Thermal Degradation of Cable | View Details |
| – |
Charger’s door or cover does not close or latch properly, leaving internal parts exposed.
|
Mechanical Latch / Enclosure Fault | View Details |
| – |
Charger’s front panel or connector has a burnt plastic smell even if it still operates.
|
Overheating Plastic Components | View Details |
| – |
Charger’s RFID card reader sometimes fails to recognize cards, requiring multiple attempts.
|
Intermittent RFID Reading | View Details |
| – |
Charger’s scheduled charging or timer function does not start charging at the programmed time.
|
Timer / Scheduling Malfunction | View Details |
| – |
Charger’s Wi-Fi or app connection is unreliable; charging may still work manually.
|
Unstable Wireless Connectivity | View Details |
| – |
Visible arcing, sparking, or burn marks at the vehicle connector when plugging in or during charging.
|
Connector Arcing / Poor Contact | View Details |
No matching codes found
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