Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The cost to diagnose the B129C code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
The Parking Aid Module (PAM) monitors the Left Front Side Sensor. A continuous and on-demand Diagnostic Trouble Code (DTC) that sets when any of the left front active park assist sensor circuits are open or the sensor signal line is shorted to ground.
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