The Green Pot CPP‑45‑10SH‑4 is a high‑precision conductive plastic potentiometer/encoder used for angular position sensing in industrial drives and servo systems. Common failure points for this class include contact wear or contamination on the internal resistive track, insulation breakdown between terminals, and mechanical shock damage to the housing or shaft alignment. Begin troubleshooting by verifying that the supply voltage is within spec and inspecting the encoder for visible cracks, debris, or misalignment; then test continuity across the resistor track and check terminal insulation resistance with a megohmmeter; finally review any diagnostic error codes from the host controller for position‑sensing faults.[oss-gpt-20b]