Per the FMCSA, "An ELD must monitor its compliance with the ELD technical requirements and detect malfunctions and data inconsistencies related to power, data synchronization, missing data, timing, positioning, data recording, data transfer, and unidentified driver records requirements. The ELD output will identify these data diagnostic and malfunction events and their status as either “detected” or “cleared.” The link below provides FAQs for when an ELD malfunction occurs.
When a diagnostic event or ELD malfunction occurs, it is displayed at the top of the mobile applications dashboard with yellow or red indicators; Yellow for a data diagnostic event, red for an ELD malfunction. Tap on the icon to view details.
The recommended actions for each malfunction do not guarantee that the malfunction will be cleared. While a recommended action may clear an ELD malfunction, the initial actions required by the FMCSA must still be completed. See the links above to understand what must occur when an ELD malfunction occurs.
|Power Compliance Malfunction - Occurs when an ELD is not powered and fully functional within one minute of the vehicle's engine receiving power and does not remain powered for as long as the vehicle's engine stays powered. These malfunctions occur when an ELD is not powered for an aggregated in-motion driving time of 30 minutes or more over a 24-hour period across all driver profiles.
|Engine Synchronization Compliance - Occurs when an ELD loses ECM connectivity to any of the required data sources (engine power status, vehicle motion status, miles driven, and engine hours) and can no longer acquire updated values for the required ELD parameters within 5 seconds of the need. Additionally, this malfunction occurs when ECM connectivity to any of the required data sources (engine power status, vehicle motion status, miles driven, and engine hours) is lost for more than 30 minutes during a 24-hour period aggregated across all driver profiles.
|Timing Compliance Malfunction - Occurs when the ELD can no longer meet the underlying compliance requirement to record Coordinated Universal Time (UTC), where ELD time must be synchronized with UTC, not to exceed an absolute deviation of 10 minutes at any time.
|Positioning Compliance Malfunction - Occurs when an ELD fails to acquire a valid position measurement within 5 miles of the commercial motor vehicle moving and 60 minutes has passed.
|Data Recording Compliance - Occurs when an ELD can no longer record or retain required events or retrieve recorded logs that are not kept remotely by the motor carrier.
|Data Transfer Compliance - Occurs when the operation of the data transfer mechanism is not confirmed. The data transfer mechanism is checked at least once every 7 days; if the data check fails, then the data transfer mechanism begins being checked every 24 hours hours. If 3 consecutive data checks fail, this malfunction is triggered.
|Other ELD Detected
When a data diagnostic event occurs, there isn't anything that the driver or company need to do at that point. They are best described as a warning that a malfunction may occur and is best practice to monitor. How to handle the malfunctions are covered in the prior section.
|Power - Indicates that the ELD may not have complied with the power requirements.
|Engine Synchronization - Occurs when connectivity to required data sources is lost and the ELD can no longer acquire undated values for the ELD parameters required for records within 5 seconds of the need.
|Missing Required Data Elements - Occurs when the ELD event record information is deficient in relation to the required data elements for each event type. Details about ELD event types can be found here.
|Data Transfer - Occurs when the ELD fails to confirm proper in-service operation of the data transfer mechanism (this check is performed at least once every 7 days).
|Unidentified Driving Records - Occurs when more than 30 minutes of driving in a 24-hour period show the 'unidentified driver' on ELD events. This event triggers an indicator that is then turned on for all drivers connecting to that ELD for the current 24-hour period and the following 7 days.
|Other - ELD provider-specific data diagnostic values to communicate the ELD's malfunction or non-compliant state to the operator