AI-Powered Car Diagnostic

Paste any OBD-II code from your scan tool and get an instant AI-powered diagnosis — root causes, repair steps, estimated cost, and YouTube repair videos. Works on all car brands. No account needed.

P0087Fuel Rail Pressure Too LowCRITICALCauses:· Weak fuel pump· Clogged fuel filterDIAGNOSE

Most Searched Fault Codes

Click any code for full AI diagnosis, causes, repair steps & videos.

CodeDescriptionSeverity
P0335Crankshaft Position Sensorcritical
P0113Intake Air Temp Sensor Highminor
P0011Camshaft Timing Over-Advancedmoderate
B0001Airbag Deployment Circuitcritical

How It Works

  • Step 1Enter Your Fault Code
  • Step 2AI Analyzes the Problem
  • AIAnalyzes the code
  • Step 3Get Full Diagnosis
  • BonusYouTube repair videos

Type any OBD-II DTC code from your scanner  Our AI engine processes your fault code instantly  Receive causes, fixes, and cost estimates

Browse by Car Brand

Select your vehicle brand for brand-specific fault code lists.

toyotahondahyundaikianissanrenaultpeugeotmercedesbmwford

Why DiagZen?

Everything you need to understand your car's warning lights.

  • AI-Powered

    Real intelligence, not just a static database

  • Multilingual

    Arabic, English, and French support

  • 100% Free

    No registration required. Always free.