Mobile App Diagnosis of CAR FAILURES FOR NON TECHNICAL PERSONS
A Field Guide to Three Common, Serious Car Failures—With an OBD-II Playbook for Android/iOS App Executive summary. You’re seeing three distinct problems: Charging/Electrical failure → battery light appears, throttle stops responding, engine stalls. Cooling failure → temp climbs quickly to ~90 °C and you’ve observed boiling in the coolant reservoir. Automatic-transmission harsh engagement → after driving for a while, you get a boom/clunk when selecting or changing gears, plus a gearbox warning lamp. All three are diagnosable with a structured checklist and the right OBD-II data . Below is a comprehensive, publish-ready breakdown: how each system works, why these symptoms happen, what to test, what to fix, and how an OBD diagnostic analysis tool (like the app you’re building) can detect and prevent them. 1) Charging System Failure (Battery Light → No Throttle → Stall) What’s happening The alternator should maintain system voltage at 13.8–14.5 V while the engine run...