AI-Powered OBD-II Diagnostics
KNOW YOUR ENGINE.
NOT JUST THE CODE.
Enter any OBD-II code and get an accurate diagnosis, repair cost, and next steps — backed by verified automotive data.
2,847 diagnostic entries
Updated from real scan data
No ads. No personal data collected.
Enter a fault code
Common codes: P0420 · P0300 · P0171 · P0301 · P0128
2,847
Fault Codes
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To Search
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P0420
Catalyst Efficiency Low
P0171
System Too Lean (B1)
⚡ AI Mechanic
Catalytic converter likely degrading. Common after 80k miles. Est. repair: $200–$800. Consult a mechanic for next steps.
Common Issues
Most Searched Codes
P0420
Catalyst System Efficiency Below Threshold
● Moderate
Est. $200–$800
P0300Random / Multiple Cylinder Misfire Detected
● High
Est. $150–$600
P0171System Too Lean — Bank 1
● High
Est. $100–$500
P0128Coolant Temperature Below Thermostat Temp
● Low
Est. $50–$250
P0301Cylinder 1 Misfire Detected
● High
Est. $150–$500
P0455Evaporative Emission System Large Leak
● Low
Est. $20–$150
P0174System Too Lean — Bank 2
● Moderate
Est. $100–$500
P0442Evaporative Emission System Small Leak
● Low
Est. $20–$150
How it works
From Code to Answer in Seconds
01
Search Any Code. Scan with the App.
Plug in your Axuva BLE OBD-II adapter and scan with the app — or search any fault code directly on this site for an instant result.
02
Verified Data Matching
Your code is matched against thousands of verified diagnostic entries — causes, severity, repair cost, and manufacturer notes — before any analysis runs.
03
AI Explains It
Your result is powered by verified automotive data and artificial intelligence — explained clearly and structured accurately.
SCAN YOUR CAR
IN SECONDS.
Connect with your Axuva BLE OBD-II adapter — compatible with most ELM327 BLE adapters. Available on iOS and Android.
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