Despite the value that cultural experts bring to efforts to broaden the participation of racially minoritized youth in US computer science, there has been little research on supporting their knowledge of computing. This is a missed opportunity to explore the diffusion of computing knowledge across local community contexts where underrepresented youth of color spend time. To address this gap, we present one strategy for promoting cultural experts' early engagement with code, "culturally responsive debugging": using culturally situated expertise and knowledge to debug code. We analyzed qualitative data from a professional development workshop for cultural experts to evaluate this strategy. Our findings have implications for broadening participation efforts and supporting non-programmers' knowledge of code.