What is an OBD2 code?

An OBD2 (On-Board Diagnostics) code is a diagnostic trouble code (DTC) generated by your vehicle's computer system when it detects a problem. These codes help identify specific issues with your vehicle's engine, transmission, emissions, or other systems.

How do I read OBD2 codes?

To read OBD2 codes, you'll need an OBD2 scanner. Plug it into your vehicle's OBD2 port (usually located under the dashboard), turn your key to the 'ON' position, and follow your scanner's instructions to retrieve the codes. Each code starts with a letter (P, B, C, or U) followed by four numbers.

What do the different types of OBD2 codes mean?

OBD2 codes are categorized by their first letter: P (Powertrain) for engine and transmission issues, B (Body) for interior systems like airbags, C (Chassis) for mechanical systems like brakes, and U (Network) for computer and module communication problems.

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🚗 OBD2 Codes Directory

Browse OBD-II diagnostic trouble codes (DTC). Explore by letter (P, B, C, U) and jump to any specific code page for details, causes, and fixes.

📋 Top Codes by Category

🔧 Powertrain (P) Codes

P0100	P0171	P0300	P0420	P0430
P0440	P0455	P0174	P0113	P0128

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🚗 OBD2 Codes Directory

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📋 Top Codes by Category

🔧 Powertrain (P) Codes

🚪 Body (B) Codes

⚙️ Chassis (C) Codes

🔗 Network (U) Codes