After replacing spark plugs and coils, engine codes P0300, P0301, P0302 persist, indicating possible wiring issues for cylinders 1 and 2.

Standard diagnostic tools and part replacement do not provide guided step-by-step troubleshooting for intermittent wiring faults.

Severity

3Medium

Willingness to Pay

implied

Added

May 6, 2026

Implied Software Gaps

Integrated diagnostic tool that correlates engine codes with wiring integrity tests

App Concept

CodeClear Diagnose

An AI-powered diagnostic app that guides automotive DIYers and mechanics through engine trouble codes with step-by-step tests, wiring diagrams, and part verification. It logs past repairs and suggests likely root causes based on symptom patterns.

Key Features

OBD-II code scanner integration with live data
Guided diagnostic workflow for specific error codes
Wiring and component diagram overlay with test points
Repair history tracking and cross-reference

Target Users: DIY car owners and independent mechanics in the automotive repair industry, small to medium shops

Revenue Model: $9.99 per diagnostic session or $19.99/month subscription for unlimited use

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