Do I need to code accu check performance, does not have chip

"E-7" in the display means an electronic error occurred or, in rare cases, a used test strip was removed and reinserted. Turn the meter off and on or take the battery out for 20 seconds and reinsert it. Perform a blood glucose or control test. If the problem persists, please contact Accu-Chek Customer Care.

its indicating the code chip you have in. so, use test strips that are compatible 111

"E-1" in the display means the test strip may be damaged or the code key is incorrect. Remove and reinsert the test strip.

THE CODE CHIPS HAVE CHANGED, THEY NO LONGER NEED A NEW CODE CHIP WITH EACH SET OF TEST STRIPS. WILL WORK SO LONG AS YOU HAVE ANY CODE CHIP IN YOUR TESTER. HOPE THIS HELPS

are you using the newer universal code chip in your meter? Try disconnecting battery pack wait a minute then reinsert. Failing that contact the makers help line, who are normally very good

Go to accu chek web site: www.accu-check,co.uk
They should be able to give the correct information or you could call their customer care phone line which is from the uk 0800 701 000, for eire it is 1 800 709 600, and from outside uk it is 0044 (0) 1444 256442. Hope this helps, they do have on line manuals at the website

This is probably due to not needing a new code chip with each batch of test strips. You do need to keep your last chip but will no longer need to change it. If possible keep more than 1 spare code chip just in case. I know that the site shows this question was posted in early 2014 but I hope this helps

CHECK THIS LINK.... ACCU CHEK Compact Plus screen messages ACCU CHEK

The Owners Manual is available for download in a pdf format at the Accu-check website.
Simply do a Google search for their home page.