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Error code P1693 typically indicates an issue related to the communication between the Engine Control Module (ECM) and other control modules in a vehicle's network. This code may arise from a faulty connection, damaged wiring, or a malfunctioning module. It's essential to diagnose the specific vehicle’s wiring and modules to determine the root cause of the error. Consulting a professional mechanic or using an advanced diagnostic tool can help resolve the issue effectively.

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