B2704 Nissan Code - Rear Sonar Sensor Left Outer
Quick Answer
With power and ground supplied to the sonar sensors, the sonar sensors transmit an ultrasonic signal. Common causes include Faulty Rear Sonar Sensor Left Outer, Rear Sonar Sensor Left Outer harness is open or shorted, Rear Sonar Sensor Left Outer circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B2704 Nissan indicates Rear Sonar Sensor Left Outer.
- Common causes
- Common causes include Faulty Rear Sonar Sensor Left Outer, Rear Sonar Sensor Left Outer harness is open or shorted, Rear Sonar Sensor Left Outer circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B2704 Nissan Description
What are the Possible Causes of the DTC B2704 Nissan?
- Faulty Rear Sonar Sensor Left Outer
- Rear Sonar Sensor Left Outer harness is open or shorted
- Rear Sonar Sensor Left Outer circuit poor electrical connection
- Faulty Sonar Control Unit
How to Fix the DTC B2704 Nissan?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2704 Nissan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B2704 Nissan Code
1. What does the OBDII code B2704 mean for a Nissan vehicle?
B2704 indicates an issue with the rear sonar sensor on the left outer side, often related to parking assistance functionality.
2. What are common symptoms of the B2704 code in a Nissan?
Symptoms include malfunctioning parking sensors, inaccurate distance readings, or the parking assist system being disabled.
3. What causes the B2704 code to appear?
Causes can include a faulty rear sonar sensor, damaged wiring or connectors, dirt or debris obstructing the sensor, or a failure in the parking assist control unit.
4. How can I diagnose the B2704 code on a Nissan?
Inspect the rear left outer sonar sensor for damage, check the wiring and connections, and use a diagnostic scanner to confirm the fault.
5. Can dirt or debris on the sensor trigger the B2704 code?
Yes, dirt, debris, or ice buildup can obstruct the sensor's functionality and lead to the B2704 code.
6. How do I fix the B2704 code on a Nissan?
Clean the sensor, repair or replace damaged wiring, or replace the faulty rear sonar sensor as needed.
7. Is it safe to drive with the B2704 code present?
Yes, but the parking assist system may not function properly, which could affect parking safety.
8. How much does it cost to repair the B2704 code on a Nissan?
Repair costs vary depending on the issue, but replacing a rear sonar sensor typically costs between $150 and $300, including labor.
9. Can I reset the B2704 code without repairs?
You can clear the code with a diagnostic scanner, but it will likely return if the underlying issue is not resolved.
10. Should I replace the rear sonar sensor to fix the B2704 code?
Only replace the sensor if it is confirmed to be faulty after inspection and testing.
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