What do the prepayment meter errors mean?

Error messages on prepayment meters are sometimes shown as a number or a very short message. We’ve listed the most common messages here with advice on what to do next.

If the advice is to 'get in touch', or the answer to your problem isn’t included here, here’s how to contact us:

  • Call us Monday to Friday, 9am to 6pm, on 0300 30 30 635
  • Email us at help@bulb.co.uk

Electricity Meters

Errors D2, D4, D6
Your new key isn't talking to the meter correctly.
Get in touch, we’ll issue you an 8-digit TAG code for you to reprogramme your key.

Error 6, Error 10
You might be using an old key, or the meter serial number doesn’t match the key.
Get in touch, we’ll issue you an 8-digit TAG code for you to reprogramme your key.

Errors 11-45
There could be something wrong with your key.
Get in touch, we’ll issue you an 8-digit TAG code for you to reprogramme your key.

Errors 1 ,2, 3, 50-99
There a meter fault that means it needs to be exchanged.
Get in touch, we’ll send an engineer to your property.

Gas meters

Call help
Your meter has an issue we’ll need to examine.
Get in touch, we’ll send an engineer to your property.

Card fail (04, 28, 35, 38), card pass, card not accepted
The meter is having difficulty reading your card. This could be either a meter or a card fault
Wipe the card with a dry cloth, insert it back into the meter. If this doesn’t fix it, get in touch.

Blank display
The display turns itself off to save battery.
Press the red A button on the meter to wake up the display.

Battery, Battery low or Battery Fail
There’s an error with the internal battery display in your meter.
Get in touch, we’ll send an engineer to your property.

Dashes appear on the screen, ‘----’ or ‘M*****’
Your meter has an issue we’ll need to examine.
Get in touch, we’ll send an engineer to your property.

Please wait
The meter is having difficulty reading your card.
Remove the card and wait 2-3 minutes before you re-insert.

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