TorqueTelltale / J1939 fault code lookup and semi-truck diagnostic reports built for repair-ready evidence.
Know what failed.
Know what to bring.
TorqueTelltale gives drivers, owner-operators, and small fleets a J1939 fault code lookup, guided checks, and a semi-truck diagnostic report that makes the next shop conversation more productive.
A warning light is a clue. The repair needs a case file.
The useful answer is rarely just a part number. TorqueTelltale connects what the truck reported with what the driver saw, measured, and tested in the field.
Context over code
Blend ECU data with the unit, symptoms, conditions, and the story behind the alert.
Proof over guesswork
Turn photos, measurements, and guided electrical checks into evidence a shop can act on.
A handoff that travels
Give the next technician the signal, the confidence, the exclusions, and the next best move.
The field workflow
From dashboard alert to mechanic proof.
Built for the minutes between a fault and a repair decision—when clarity saves the most time.
Read the whole signal
Pull heavy-duty J1939 data from a compatible Bluetooth adapter, then put every code in vehicle context.
Test before you buy
Capture symptoms, photos, voltage, continuity, and guided electrical checks that narrow the real failure.
Hand off with confidence
Send the receiving shop a Mechanic Proof report with findings, exclusions, likely parts, and next tools.
The handoff
Give the shop more than a code.
A Mechanic Proof report makes the reasoning visible. That means fewer blind parts swaps, fewer circular calls, and a better first conversation at the bay.
Mechanic Proof / Case 0047
Most likely
Supply-side restriction
87%
Voltage check attached
Continuity check attached
03 field photos attached
Evidence ledger
The next repair decision
Don't send the truck in with a question mark.
Tell us what you're trying to diagnose, what adapter you use, and where the handoff breaks down today.
torquetelltale@polsia.app