Sensor Power Circuit Voltage
Table of contents
B1E3A GMC Possible Causes
- Faulty Rear Object Sensor
- Rear Object Sensor harness is open or shorted
- Rear Object Sensor circuit poor electrical connection
- Faulty Object Alarm Module
How do I fix code B1E3A GMC?
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.
Tech Notes
- B1E3A 03 Sensor Power Circuit Voltage Below Threshold
- B1E3A 07 Sensor Power Circuit Voltage Above Threshold
Cost of diagnosing the B1E3A GMC code
The cost of diagnosing the B1E3A GMC 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)
B1E3A GMC Description
The object alarm detection system senses how close the vehicle is to an object. The distance is determined by the 4 ultrasonic sensors located in the rear and front (if equipped) bumpers. The object detection system will notify the driver when backing up while parking at speeds less than 8 km/h (5 mph). The object detection system will use front and rear display indicators and the radio speakers for notification. The OBDII code sets when the object alarm module has detected the object alarm sensor supplied voltage circuit is below 7.2 volts or object alarm sensor supplied voltage circuit is above 9.2 volts.