diagnostic code

noun
UK /ˌdaɪ.əɡˈnɒs.tɪk kəʊd/
US /ˌdaɪ.əɡˈnɑː.stɪk koʊd/

A special set of letters or numbers that tells doctors or machines what problem something has.

The mechanic read the diagnostic code from the car's computer to find the broken sensor.


OTHER MEANINGS

2. A code used in medicine to label a disease or condition for records and billing.

The nurse entered the diagnostic code for the patient's illness into the computer.

3. A hidden signal a computer program uses to report what went wrong.

The app showed a diagnostic code when it could not connect to the internet.

4. A short label that helps technicians identify a specific fault in a machine.

Each diagnostic code in the manual points to a different part of the engine.