The trouble B1693 Code comes when the engine is checked and you should not drive the car with any problem of the engine. If you cannot fix the problem, you should not try to solve the problem. You need to get some answer like manufacture name and model number for solving the issue. The dictionary meaning also helps you to understand the problem and solve it. The automobile dictionary meaning for the code is B for Body Code Problem is antilock brake system, electronic suspension and steering systems. 1 for MFG – Manufacturer Specific. 6 for Vehicle Speed Control and Idle Control System. 9 for Crankshaft Position Sensor Circuit Performance and 3 for Transmission Control Module Reprogrammable Memory.