Introduction:
The Fault Code Report displays fault codes received from equipment that is connected to the J1939 port using a supported GPS device. This report helps identify engine, transmission, and system faults — along with associated lamp status indicators and detailed source identifiers.
By default, the report returns all fault codes from the past 24 hours and loads blank until filters are selected.
📍 Navigation
To access this feature:
Go to: Fleet > Maintenance > Fault Code Report
📌 Use This Report To:
Review all fault codes for supported equipment
Filter fault activity by equipment, protocol, VIN, or code
See first and last fault occurrences, cleared dates, and fault frequency
View lamp warnings like MIL, Red Stop, Amber Warning, and Protect Lamp
Map fault code locations for diagnostics or service review
🖼 Example of the Fault Code Report filter view before generating results.
🧾 Step-by-step Instructions
In the Equipment dropdown, select a supported machine — or leave as “All”
Choose a Protocol (e.g., J1939 or J1708)
Filter by VIN # (optional)
Check Valid VINs Only to remove unsupported entries
Select a Fault Code:
All: all available fault codes
Any Fault Code: only fault codes with triggered lamp statuses
Malfunction Indicator Lamp:
Red Stop Lamp:
Amber Warning Lamp Status:
Protect Lamp:
Enter a Start Date and End Date
Required for generating the report
Defaults to the past 24 hours if left unchanged
Click Generate Report
📋 Table Columns & Definitions
After generating, the report displays a single table with sortable columns.
Hover over any column header to view its full name or definition.
Click on the arrow [ > ] on the left to display the fault occurrences.
Asset Name – The name of the equipment
Fault: First Occurrence – Timestamp of first detected fault
Fault: Last Occurrence – Most recent instance of this fault
Fault: Cleared Date – When the fault was resolved or cleared
Fault Count – Number of times the fault occurred since last cleared
Manufacturer – Equipment manufacturer
Make – Equipment make (e.g., Kenworth, Ford)
VIN – Vehicle Identification Number
Year – Year of manufacture
Driver – Assigned operator, if applicable
Project – Current or last known assigned project
Malfunction Indicator Lamp (MIL) – Check engine light
Red Stop Lamp (RSL) – Indicates engine should be stopped
Amber Warning Lamp Status (AWL) – Non-critical warning
Protect Lamp (PL) – Triggered by fluid, pressure, or system issues
Source Address (SA) – Which system reported the fault (e.g., engine, transmission)
Message Identification (MID) – Component or system generating the fault
Suspect Parameter Number (SPN) – Data point that triggered the error
Fault Mode Indicator (FMI) – Type of fault (e.g., voltage out of range, incorrect rate)
Parameter Identifier (PID) – J1708-specific metric identifier
Subsystem Identifier (SID) – Subcomponent code within a MID
Occurrence Count (OC) – How many times the fault condition has occurred
Description – Interpreted SPN/FMI fault description
Protocol – J1939 or J1708 cable type
Address – Reverse-geocoded location where the fault occurred
Map – Click to view a location map for the fault
💡 Understanding Fault Code Components
Fault codes are typically shown as a Source Address / SPN / FMI string, like 11/1049/3:
SA 11 – Brakes controller (ABS)
SPN 1049 – Brake Pressure Sensing Axle 1
FMI 3 – Voltage above normal or shorted to high source
This breakdown helps when fault descriptions are too vague or multiple codes appear similar.
Fault codes are only available for supported devices such as GS-305, GS-340, GS-364e, and GS-364 connected to the J1939 port.
🔗 Interactive Behavior
Hover over column headers for definitions
Click the Map button to view location of fault occurrence
Sort columns using header arrows
📤 Export Options
🖨️ Print Table
📄 Download CSV – raw data