PDC

📖 YOUCANIC Automotive Glossary

PDC (Park Distance Control) uses ultrasonic sensors mounted in the front and/or rear bumpers to detect obstacles during low-speed parking maneuvers. The sensors emit ultrasonic pulses and measure the return time to calculate distance. As the vehicle approaches an object, the system provides audible warnings (increasing beep frequency) and often a visual display showing distance and direction. Some advanced systems include automatic parking capability where the vehicle steers itself into a parking space.

PDC sensor failures cause error messages, false alerts, or no alerts. Common causes include sensor damage from minor bumper impacts, sensor obstruction (dirt, ice, snow — especially in winter), faulty sensor (often one specific sensor fails), and wiring damage from bumper removal. Sensors typically fail one at a time, and the system identifies which sensor by zone. The YOUCANIC UCAN-II reads parking sensor module codes identifying the specific faulty sensor.