Upper Hands Free Sensor Signal Invalid
Table of contents
B323A CADILLAC Possible Causes
- Faulty Upper Hands Free Sensor
- Upper Hands Free Sensor harness is open or shorted
- Upper Hands Free Sensor circuit poor electrical connection
- Faulty Hands Free Liftgate Sensor Control Module
How do I fix code B323A CADILLAC?
Check 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.
Cost of diagnosing the B323A CADILLAC code
The cost of diagnosing the B323A CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B323A CADILLAC Description
The power liftgate has a feature that detects the motion of a foot under the rear fascia, this allows the operator to open the liftgate when his or her hands are full of packages. As an indicator that the action has been properly preformed, the liftgate hands-free sensor control module will send a serial data message to the liftgate control module to command the liftgate to release and power open and the liftgate control module will send a serial data message to the body control module to command the tail lights to flash 3 times. The Diagnostic Trouble Code (DTC) sets when the liftgate control module has received a serial data message that an invalid signal from the upper hands free sensor has been detected by the Hands Free Liftgate Sensor Control Module.