Any Tech.
Guided Fault Isolation.
Guided Diagnosis walks your technician through fault isolation one step at a time. Perform the test. Tap the result. Get the next step. No experience required.
Next-Best-Test sequencing available on Multi-Bay & Fleet plans · Guided diagnostic chat included on all tiers
The Industry's Problem.
The techs you can hire today don't have 20 years of diagnostic experience behind them. Your customers still expect dealer-level accuracy on the first visit.
The technician shortage isn't coming. It's here, and experience is the part you can't hire around.
Where the lookup actually happens before anyone turns a wrench.
The most expensive person in the building, doing the cheapest task in the building.
Which test next, and why
Record a result and watch the suspect list re-rank. The arithmetic below is the engine’s own, running here.
Backprobe pin 3 KOEO and read the reference voltage.
Ranking and reweighting run the engine’s own scorer in your browser — tests are ordered by hypothesis space eliminated per hour of labour. The language model proposes the hypotheses; it never does this arithmetic.
See It Work.
P0101 — MAF Sensor Range/Performance. Tap through it the way your tech would.
Step 1 of 4 — recorded walkthrough, tap to advance
Backprobe Pin 3 on the MAF sensor connector with KOEO. What voltage do you see?
Not a Flowchart.
A Thinking Machine.
Factory flowcharts are static PDFs written 5 years ago. They don't know about your aftermarket CAI, your rodent-chewed harness, or the failure pattern that emerged last week.
Dynamic, Not Static
Factory flowcharts are PDFs that hit dead ends. Guided Diagnosis adapts in real-time — if you find aftermarket wiring, rodent damage, or a previously repaired harness, it reroutes the diagnostic path on the fly.
One Tap to Advance
No typing. Perform the physical test on the car, tap the outcome button that matches your finding, and the next step appears. Gloves-on workflow — designed for greasy hands on a phone screen.
Pinpoint Precision
Every step narrows the fault window. Pin numbers, wire colors, connector locations, and torque specs are embedded directly in the instruction — not buried in a separate manual lookup.
Automated Reasoning
The state machine is driven by the same Diagnostic Engine. It cross-references your vehicle, DTCs, live PID data, NHTSA complaints, and historical fixes to generate each step.
Built for Every Bay.
Follow the steps, learn on the job. Guided Diagnosis teaches diagnostic thinking by doing — not by watching YouTube at lunch.
Handle intermittent electricals and module communication faults without waiting for the A-tech. Guided Diagnosis bridges the experience gap.
Stop losing $130/hr A-tech time to diagnosis that a B-tech could handle with guidance. Multiply your diagnostic capacity without hiring.
Factory Flowcharts vs. Guided Diagnosis
| OEM Flowchart | Guided Diagnosis | |
|---|---|---|
| Adapts to findings | ⚠ within its tree | ✅ |
| Handles aftermarket parts | ❌ | ✅ |
| Includes NHTSA recalls / patterns | ❌ | ✅ |
| Pin numbers + wire colors | ✅ surveyed | ⚠ recalled |
| Interactive outcome buttons | ❌ | ✅ |
| Cross-references live PID data | ❌ | ✅ |
| Updated in real-time | ❌ (static PDF) | ✅ |
| Works on a phone in the bay | ❌ | ✅ |
| Ranks tests by info gained per hour | ❌ | ✅ |
⚠ within its tree — a factory pinpoint test does branch on the result you report. What it cannot do is carry on once the fault falls outside the authored tree — rodent damage, aftermarket wiring, a corroded ground. ⚠ recalled — wiring figures are recalled by the language model, not read from OEM service data for your VIN. They are flagged ⚠ verify vs OEM in the step; confirm them against manufacturer service information before you act on them.
Turn Every Bay Into a Diagnostic Bay.
Your B-tech diagnosed a CAN-Bus fault today. Your lube tech isolated a parasitic draw. Your shop just ran 3 more diagnostic hours without hiring anyone.