OBD2 Code Lookup
Enter your diagnostic code to get instant explanations, severity levels, and repair guidance.
Popular Codes
Click a code to see details, or search for your specific code above.
Your catalytic converter isn't cleaning exhaust gases efficiently
Your engine has random misfires across multiple cylinders
Your engine is running too lean (too much air, not enough fuel) on Bank 1
There's a small leak in your EVAP system
Your engine isn't reaching normal operating temperature fast enough
Your EGR (Exhaust Gas Recirculation) system has insufficient flow
Transmission control system malfunction
Idle control system malfunction
Code Categories
Powertrain
Body
Chassis
Network
Enter a Code to Get Started
Type your OBD2 diagnostic code in the search box above, or click on a popular code to see detailed information.
Example codes:
Frequently Asked Questions
Common questions about OBD2 codes
What is an OBD2 code?
OBD2 codes are standardized diagnostic trouble codes that help identify vehicle issues when your check engine light comes on.
How do I read codes?
Use an OBD2 scanner plugged into your vehicle's diagnostic port (under the dashboard) with the ignition on.
What do the letters mean?
P = Powertrain, B = Body, C = Chassis, U = Network. Each category covers different vehicle systems.
Can I drive with codes?
It depends on the code severity. Some are safe short-term, others require immediate attention. Check the urgency level.
Disclaimer: This tool provides general diagnostic information for educational purposes. Always consult a certified mechanic for professional diagnosis and repair. Improper repairs can be dangerous.