Your question is Root Cause for a Manufacturing Issue. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe an experience investigating a manufacturing issue and how you approached finding the root cause.
Explain how you defined the problem, separated symptoms from causes, collected and validated evidence, and worked with relevant partners. Discuss how you handled uncertainty, competing hypotheses, or disagreement during the investigation. Focus on your personal contribution, the corrective or preventive actions taken, the outcome, and what you learned.