Yes, many NAPA Auto Parts stores do check engine codes—often for free.
They offer this service to help customers identify what might be triggering the Check Engine Light (CEL) in their vehicle.

What NAPA’s Code Check Includes

• Use of an OBD-II scanner to read your vehicle’s error codes
• Printout or on-screen display of the specific codes (e.g., P0301, P0420)
• Basic explanation of what the code means (like “cylinder misfire” or “catalyst efficiency low”)

This helps you:

• Understand what might be wrong
• Decide whether it’s a DIY repair or something for a mechanic
• Choose the right replacement parts if you’re doing the fix yourself

Important Notes

• Not all NAPA stores offer this service—it’s best to call your local store to confirm
• They do not clear codes after reading them
• This is a basic scan, not a full diagnostic—complex issues still need professional diagnosis

Final Thoughts

Yes, NAPA does check engine codes at many of their locations, usually for free.
It’s a convenient first step if your check engine light comes on and you want to know what’s going on before heading to a shop or buying parts.