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Fails WP: NOTDICT and WP: NOTTEXTBOOK. Does not cite any sources and has been tagged for notability issues for seven years. I also can't find any sources that would make the article read like an encyclopedia page, as opposed to technical documentation. (proposed by HyperAccelerated)

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Find sources: "SCSI check condition" – news · newspapers · books · scholar · JSTOR

This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.
Find sources: "SCSI check condition" – news · newspapers · books · scholar · JSTOR (December 2009) (Learn how and when to remove this message)

The topic of this article may not meet Wikipedia's general notability guideline. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted.
Find sources: "SCSI check condition" – news · newspapers · books · scholar · JSTOR (November 2017) (Learn how and when to remove this message)

In computer terminology, a Check Condition occurs when a SCSI device needs to report an error.

SCSI communication takes place between an initiator and a target. The initiator sends a command to the target which then responds. SCSI commands are sent in a Command Descriptor Block (CDB). At the end of the command the target returns a Status Code byte which is usually 00h for success, 02h for a Check Condition (error), or 08h for busy.

When the target returns a Check Condition in response to a command, the initiator usually then issues a SCSI Request Sense command in order to obtain more information. During the time between the reporting of a Check Condition and the issuing of a Request Sense command, the target is in a special state called a Contingent Allegiance Condition.