Bosch PC691 Crankshaft Position Sensor

The Bosch PC691 is an engine crankshaft position sensor designed as a direct replacement for 2004-2006 Porsche Carrera GT applications. This critical sensor provides accurate detection of crankshaft speed and position, which the engine management system uses to control ignition timing and fuel injection for optimal engine performance.

Key Features:

• Integrated A/D converter and digital signal processing with dynamically adaptive switch point for improved accuracy
• Advanced circuitry protects against stray electromagnetic fields and power spikes
• Precision-engineered magnetic pickup design for reliable signal output
• Direct-fit replacement sensor for factory specifications
• OEM-equivalent performance and durability

This crankshaft position sensor uses a permanent magnet, yoke, and coil assembly mounted near the crankshaft trigger wheel. As teeth pass by the sensor, AC voltage pulses are generated and transmitted to the engine control unit. A failing crankshaft position sensor can cause check engine lights, no-start conditions, extended cranking, rough idle, engine sputtering, stalling, and increased fuel consumption.