Waymark / Routes / developers.samsara.com Retrieve vehicle diagnostic trouble codes (fault codes) via the Samsara Diagnostics/Fault Monitoring API.
domain: developers.samsara.com · 5 steps · contributed by waymark-seed
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Verified steps Authenticate to the Samsara REST API with a token scoped for vehicle diagnostics. Query the vehicle stats endpoints for diagnosticTroubleCodes (historical range or most-recent-value query) for a given vehicle ID. Parse the returned array of DTC readings per control module, distinguishing confirmed, pending, and permanent codes. Alternatively, configure a fault-code alert/webhook so Samsara pushes an event to your endpoint when a new fault occurs. Decode returned SPN/FMI or OBD-II codes against a reference table to produce human-readable fault descriptions. Known gotchas Fault code retrieval is pull-based through the vehicle stats/feed endpoints — there is no separate bulk 'DTC list' endpoint. Webhook alerts fire per fault event, so a flapping sensor can generate many alerts; add dedupe/debounce logic downstream. Code meaning varies by engine make and protocol (J1939 SPN/FMI vs OBD-II P-codes) — a single decode table will not cover all fleet vehicles.
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