OBD2 Fault Code Lookup Tool
Got an unexpected check engine light on your dash? Enter your diagnostic trouble code below to instantly look up its standard definition, understand what it means for your vehicle, and find the right diagnostic tools to clear it.
How to Use This Tool
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Locate your code: Retrieve the trouble code (e.g., P0100, P0171, or P0300) using any standard OBD2 scanner or code reader.
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Enter the code: Type the full code into the search box above and click Lookup Code.
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Review the fault: Read the description of the circuit, sensor, or system malfunction to pinpoint the issue.
- Find Out More: Click “View Symptoms & Common Causes” for further information.
Need to Diagnose and Clear Codes in the Workshop?
A fault code tells you where the vehicle’s computer is seeing an issue, but clearing the code and tracking live sensor data requires the right hardware. Whether you’re a DIYer working from home or running a local mobile service, equip your garage with professional-grade diagnostic equipment.
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Explore Top Brands: Browse our range of reliable diagnostic scanners and automotive tools from trusted names like Thinkcar and TOPDON.
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Local Click & Collect: Order online and pick up directly from our base in South Shields to get back to work immediately.
Have a complex fault or need advice on choosing the right scan tool for your setup? Get in touch with our team or drop by for a chat.