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Root Cause Mechanic

OBD2 scanner & fault codes
Root Cause Mechanic LLC · Utilities
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App info

Developer
Root Cause Mechanic LLC
Category
Utilities, Productivity
Released
Sep 10, 2026
Version
1.0 (Sep 10, 2026)
Price
Free
Size
6.6 MB
Requires
iOS 17.0
Age rating
4+
Languages
English

In-app purchases

Single Second-Opinion$14.99
Single Vehicle$99.00
Household - 3 Vehicles$149.00
Current prices, App Store US.
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About Root Cause Mechanic

Know what's actually wrong before you pay to fix it. Root Cause Mechanic plugs into your car through any standard Bluetooth OBD-II adapter and turns what your engine is doing into an answer you can act on. Most code readers hand you a number and a guess. This one runs an actual diagnostic process: it reads live engine data while you drive, asks what you're experiencing, and works out which explanations the evidence supports — and which it rules out. What you get • Plain-English fault codes — 663 of them, offline • Live engine data captured over a real drive, not a single snapshot • Ranked explanations with the reasoning shown • A don't-buy list: parts the evidence says you do NOT need • Recall lookups and a maintenance schedule for your exact vehicle • VIN scanning by camera No proprietary hardware. Works with any standard Bluetooth OBD-II adapter (about $20). Nothing is locked to us,…
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