How do I read OBD-II codes?
Quick Answer
Use a compatible scan tool and record the full code, module, status and available freeze-frame data before clearing.
Use a compatible scan tool and follow the vehicle and tool instructions. Locate the diagnostic connector using the owner manual, then record the complete displayed code including any suffix, the reporting module and status. Save freeze-frame values with units and readiness information before clearing codes. A basic reader may not access all manufacturer-enhanced, body or chassis modules.