Tire Pressure Monitoring: Auto-Detection and Fault Code Alerts

What is this?

CLUE tracks tire pressure for your Samsara-connected vehicles automatically. The app reads PSI for all four tires every two minutes when the engine is running, learns each vehicle's normal range, and generates fault codes when something is wrong. No sensors to install. No manual checks.

Who is this for?

• Fleet managers who want to catch tire issues before they cause a breakdown or blowout.
• Mechanics who need to know which tire needs attention before the truck arrives at the shop.
• Safety officers who require documented tire health data for compliance and incident prevention.

How to use it

Step 1: Open Asset Details for a Samsara vehicle

Find the vehicle in your fleet list and open its Asset Details page. Look for the tire icon in the metrics row at the top, after the DEF level reading.

Step 2: Tap the tire icon to see live PSI readings

A card appears showing all four tire positions from above. Each tire shows its current PSI. Dot color tells you the status at a glance: green is within normal range, orange is 10-20% below baseline, red is more than 20% below or has an active fault code.

Step 3: Check fault codes for any alerts

When CLUE detects a tire problem, it generates a fault code automatically. You will see it in the Fault Codes section of Asset Details. No manual review needed. CLUE catches it and flags it for you.

How fault codes are generated

CLUE runs four detection checks every hour and creates fault codes automatically. Here is what each check looks for:

• Acute Underinflation: Any tire drops below 80% of its learned baseline. Generates a high-severity fault code immediately.
• Slow Leak: A single tire loses pressure steadily over 24 hours while its axle partner stays stable. This isolates a real leak from temperature-driven changes, which affect both tires equally.
• Cross-Axle Imbalance: Two tires on the same axle differ by more than 15%. Flags uneven wear or a hidden slow leak that has not yet crossed the underinflation threshold.
• Chronic Underinflation: A 7-day rolling average sits below 80% of baseline. Catches vehicles that run perpetually low and never trigger the acute check.

Fault codes are deduplicated: if an open fault code of the same type already exists for that vehicle, no new one is created within 24 hours. Your fault code list stays clean.

The full details

• Requires: Samsara telematics with OBD-exposed TPMS. Covers roughly 20-25% of most fleets, predominantly newer Ford trucks. No extra hardware or add-on needed.
• Works on: Web app and mobile app (iOS and Android)
• Reading frequency: Every 2 minutes when the engine is running
• Baseline learning: CLUE learns each vehicle's normal range over 7 days. No fault codes fire during this learning period. Baselines refresh monthly.
• Fault code frequency: Hourly checks. One open fault code per type per vehicle at a time.
• Enable: Off by default. Contact your CLUE administrator to turn it on for your organization.
• Permissions: Any user who can view Asset Details can see tire pressure data. No extra permissions needed.

Tips

• A dash next to the tire icon means no tire pressure data is available for that vehicle. Either it is not Samsara-connected or its OBD does not expose TPMS.
• The slow leak check compares a tire against its axle partner, not against an absolute threshold. Cold mornings will not trigger false alerts.
• All four checks run in order of severity. If a vehicle has multiple issues, CLUE generates a fault code for each one separately.