Understanding Fault Code Severity

Fault codes from telematics have different severity levels. Understanding what each means helps prioritize your response.

Severity Levels

Critical (Red)

Immediate action required:

• Safety hazard potential
• Equipment should stop operating
• Risk of major damage if ignored

Examples: Engine overheating, low oil pressure, brake system fault

Monitor/Warning (Yellow)

Needs attention soon:

• May affect performance
• Could become critical if ignored
• Schedule service promptly

Examples: Check engine light, DEF level low, filter restriction

Minor/Informational (Blue)

Low priority:

• Minor issue or advisory
• Schedule for next service
• No immediate impact

Examples: Service reminder, sensor calibration needed

Responding to Fault Codes

1. Critical - Stop equipment, inspect immediately, create urgent WO
2. Warning - Schedule service within days, monitor closely
3. Minor - Add to next scheduled service

Tips

• Never ignore Critical codes - they're urgent for a reason
• Document fault codes in work orders for history
• Track recurring codes to identify chronic issues