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SYMPLE UTILITY / 05

Decode the light.
Find your next step.

OBD2 code lookup. Understand the fault, possible causes and what to check next.

OBD2 DIAGNOSTICS

What’s your code?

Enter the code from your scanner. A fault code is a starting point for diagnosis, not a parts shopping list.

One five-character code, e.g. P0300. Extended scanner suffixes are not supported.

Includes 9,415 code entries across powertrain, body, chassis and network systems. Manufacturer-specific meanings require verification. Detailed troubleshooting covers 25 common codes, with selected Toyota and Mazda bulletins.

Browse supported codes

    READY WHEN YOU ARE

    Give that code some context.

    Your code definition and checks will appear here.

    Have your make, model, year and scanner code ready. No vehicle details are sent to a lookup service.

    BEFORE YOU CLEAR IT

    Save all codes and freeze-frame data first. Clearing a code does not fix the cause and can reset emissions readiness monitors.

    WHEN TO STOP

    If the check-engine light flashes, the engine shakes severely, or you notice overheating or a fuel leak, pull over safely, switch off and seek assistance.

    KNOW THE LIMITS

    Engine, VIN and market can change the diagnostic procedure. Japanese imports may use different systems; a model year alone does not confirm OBD2 compatibility.