Error Codes and Their Meanings

Updated 5 months ago by Dorian Greenow

Even if you've been using a Keto-Mojo meter for a long time, you're likely to get an error code  every now and then. If you get one and don't know what it means, this nifty chart will help clarify things:

CodeWhat It MeansWhat to DoLink to Help
E-bYour batteries are too low.Change the batteries.
E-2The meter thinks the test strip has expired code chip.Check the year setting first; if it's not accurately set, it may cause at E-2 error. If that doesn't work, try the meter again with a new lot of test strips to learn if the strips are, in fact, expired.What is the E-2 error and how do I fix it?
E-UThe meter thinks it has a used strip.Repeat test with a fresh, unused strip, following the steps in the help article, linked at right.What is the E-U error reading and how do I fix it?
E-tThis appears when the ambient temperature is above or below system-operation range.The system operation temperature range is 50°F to 104°F (10°C to 40°C). Repeat the test after the meter and the test strips are in the system-operating range.
There's a potential problem with the meter.Try to test again with a new test strip. If the meter still doesn't work, contact customer service for assistance. Don't worry-- all meters come with a lifetime guarantee, so we've got your back!How do I contact Customer Support
E-FThis error appears when your strip doesn't get enough blood volume, when the test strip is removed while processing, or when the HCT result is above 75%.For more information, check out our help article (linked at right). Repeat with a new test strip. If the problem persists, contact customer service. We're happy to help!What is the E-F error and how do I fix it?

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