🔧 How to Fix Hexing Err 01— Invalid Token / Wrong Cryptographic Signature
Err 01 means: The 20-digit token's encrypted signature does not validate against the meter's internal STS parameters. Fix: Re-type the token carefully. Verify the meter serial number (enter 804). Confirm the token was purchased for this exact meter number. Check tariff index: enter 809.
❓What Causes Err 01?
The 20-digit token's encrypted signature does not validate against the meter's internal STS parameters. The token may be mistyped or generated for a different meter.
Root cause: Typo in 20-digit entry, token purchased for wrong meter serial, or Tariff Index mismatch between vending server and meter.
🛠How to Fix
Re-type the token carefully. Verify the meter serial number (enter 804). Confirm the token was purchased for this exact meter number. Check tariff index: enter 809.
📞When to Call Your DisCo
Contact your DisCo if the error persists after trying the fix steps, or if you're uncomfortable working with electrical equipment.
AEDC
Abuja Electricity
📞 08039070070
💬 08152141414, 08152151515
✉️ customercare@abujaelectricity.com
BEDC
Benin Electricity
📞 0700-000-2332
✉️ servicedesk@beninelectric.com
EKEDC
Eko Electricity
📞 0708-067-1170
✉️ customercare@ekedp.com
EEDC
Enugu Electricity
📞 084-700-100
💬 08150826060, 08150826061
✉️ customerservice@enugudisco.com
IBEDC
Ibadan Electricity
📞 07001239999
✉️ customercare@ibedc.com
IKEDC
Ikeja Electric
📞 0201-7000-250
💬 09088951626
✉️ customercare@ikejaelectric.com
+ 5 more DisCos — see all contacts
⌨️Hexing Useful Shortcodes
| Code | What It Does |
|---|---|
| 801 | Current available credit balance |
| 804 | Internal hardware serial number |
| 807 | Hardware status register (hexadecimal/binary fault codes) |
| 808 | Instantaneous power draw in kW (real-time load check) |
| 809 | Current Tariff Index (verify vending TI alignment) |
| 865 | Validate operational mode (normal vs factory test) |
| 800 | Total cumulative active energy since manufacture |
| 830 | Recall last token number entered |
| 812 | Cancel/mute audible piezoelectric alarm |