Fault-Code Logger & Recurring-Failure Finder: Fix Root Causes, Not Symptoms
Log every fault code and failure mode per asset and model, let the tool surface the codes that keep coming back on the same model or site, and have a reliability lead approve which patterns become a published known-issue bulletin for your techs.
A web tool where techs log fault codes and failure descriptions per asset, free-text symptoms get normalized to your code list, the tool detects codes that recur on a given model or site above a threshold, a reliability lead reviews and approves which patterns become a flagged known issue, an approved bulletin goes out to techs, and the full pattern report exports to CSV.
Before you start
- A Supabase account (free)
- A Vercel account (free)
- A Resend account (free)
- A CSV or Google Sheet of your fault codes / failure notes per work order, and a list of your models
- Claude Code or any AI coding agent
The problem this kills
Your techs see the same fault code on the same model month after month, but nobody can prove it. The evidence is scattered across work orders, free-text notes ("won't hold pressure," "P-0420 again," "comp tripping"), and a few senior people's gut feel. So you keep paying to fix the symptom on one unit at a time, while the root cause — a bad batch of a part, a firmware bug, a model-line defect — quietly keeps biting every site. By the time someone notices the pattern, you've eaten dozens of avoidable truck rolls.
The fix is to make the pattern undeniable: log every fault code and failure mode against the asset and the model, clean up the free-text so the same problem reads the same way every time, and let the tool count how often a code recurs on a model or at a site. The hard parts aren't charts — they're normalizing messy symptom text to real codes, setting an honest threshold for what counts as "recurring," and making sure a human signs off before you tell every tech in the field that something is a known issue. You do not need to be a developer to build a tool that does all of it.
What you'll build
A simple internal web tool for your service and reliability team. Techs log a fault against an asset — a code, or a free-text symptom that the tool maps to your code list — straight from a work order or a CSV/Sheet import. The tool detects recurring patterns: this code keeps appearing on this model, or at this site, above a threshold you set. A reliability lead reviews each surfaced pattern and decides whether it becomes a flagged known issue with a short bulletin (what to look for, the fix that worked). Approved bulletins go out to techs by email and show up on the asset's history. The full pattern report — counts by model and site, with the fixes that worked — exports to CSV any time.
What's inside the Implementation Plan
The downloadable plan is a step-by-step file you paste into an AI coding agent. It opens by interviewing you about your business — how techs record faults today, the systems and sheets you use, your real fault-code scheme and the free-text phrases that map to each code, your model and site naming, how many faults you log a week, the threshold that should count as "recurring," who is allowed to publish a known issue, and the messy edge cases like blank codes, one symptom with several codes, and the same fault logged twice on one visit. It reads a short spec back to you for a thumbs-up, then builds the tool around your codes and rules instead of a generic template. From there it walks the agent through the data model, the fault-logging and import flows, the symptom-to-code normalizer, the recurring-pattern detector, the reliability-lead approval gate, the bulletin send, and the CSV export. Every step ends with a ready-to-copy prompt.
The governance it includes (this is the point)
This isn't a toy. The plan builds in the controls a real reliability function needs: login so only your team can use it, row-level security so people only see their own organization's data, a complete audit trail of every fault logged, pattern surfaced, known-issue decision, and bulletin sent (who, what, when), a hard human-approval gate so no pattern becomes a published known issue until a reliability lead signs off, and duplicate guards — a dedupe on (asset + code + date) so the same fault from one visit can't inflate the count and trigger a false "recurring" flag. The tool exists to make a careful human call easy: the detector proposes the pattern, a person decides whether it's real and worth telling the field about.
Who it's for
Service managers, senior techs, and quality / reliability leads who already suspect "this model has a problem" but can't yet prove it with numbers — and who are tired of fixing the same failure one unit at a time. If you can describe how your techs name a fault, you can build this.
You've got this — open the plan, paste the first prompt, and you'll be catching your first real recurring failure by the end of the weekend.