Rear Sonar Sensor Left Inner
Table of contents
B2721 NISSAN Possible Causes
- Faulty Rear Sonar Sensor Left Inner
- Rear Sonar Sensor Left Inner harness is open or shorted
- Rear Sonar Sensor Left Inner circuit poor electrical connection
- Faulty Sonar Control Unit
How do I fix code B2721 NISSAN?
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 B2721 NISSAN code
The cost of diagnosing the B2721 NISSAN 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)
B2721 NISSAN Description
With power and ground supplied to the sonar sensors, the sonar sensors transmit an ultrasonic signal. This signal is reflected back to the sensor by objects large enough and close enough to be detected. The sonar sensors measure the time from the transmitted signal to the time the signal is reflected back and send this information to the Sonar Control Unit. The Sonar Control Unit sets the Diagnostic Trouble Code (DTC) when the Rear Sonar Sensor Left Inner is out of factory specifications.