Which of the following could be an indicator of malfunction in the Intoxilyzer 9000?

An indicator of malfunction in the Intoxilyzer 9000 is reflected by error messages. When the device displays an error message, it signals that there may be an issue with its operation, whether related to its internal systems, sensor accuracy, or other technical components. These messages are critical alerts that prompt technicians or operators to investigate further to diagnose the problem and ensure the device is functioning correctly.

In contrast, consistent test results, a calibrated device status, and dependable user performance are all signs that the Intoxilyzer is operating normally. Consistent test results indicate that the device is providing reliable outputs, while a calibrated device status means that the machine has been properly adjusted to ensure accuracy. Dependable user performance suggests that the operator is knowledgeable and consistently following the required protocols for testing, which contributes to reliable outcomes. However, error messages directly indicate a potential malfunction that requires immediate attention.