CP-B1
ChargePoint
Cellular Modem Communication Failure
Charger cannot connect to cellular network (for models with LTE); app shows offline; local charging may still work.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Weak cellular signal, Expired or inactive SIM, Faulty internal LTE modem, Antenna damage or disconnection
How to Fix / Troubleshooting
Note: This applies only to ChargePoint home chargers equipped with cellular connectivity.
- Step 1 – Check signal:
- Use a mobile phone from the same carrier at the charger location to verify signal strength.
- If poor, consider relocating the charger or using Wi-Fi instead.
- Step 2 – Power cycle:
- Turn OFF the breaker for 1–2 minutes, then turn it back ON.
- Allow several minutes for the modem to register on the network.
- Step 3 – Antenna inspection (qualified):
- With power OFF, open the housing and locate the cellular modem module and antenna connection.
- Ensure the antenna cable is firmly seated and not damaged.
- Step 4 – SIM and account:
- Contact ChargePoint support to verify that the embedded SIM and service are active.
- Step 5 – Replace modem module:
- If all else fails, the cellular modem module may need replacement by an authorized technician.
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Repair Difficulty
Medium
3/5
Required Part
Cellular Modem Module
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