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P0151 Nissan Code - O2 Sensor Circuit Low Bank 2 Sensor 1

Quick Answer

The P0151 code for Nissan vehicles indicates a problem with the O2 sensor circuit for Bank 2 Sensor 1. Common causes include Faulty O2 sensor, Wiring or connector issues in the O2 sensor circuit, Exhaust system leaks. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0151 Nissan indicates O2 Sensor Circuit Low Bank 2 Sensor 1.
Common causes
Common causes include Faulty O2 sensor, Wiring or connector issues in the O2 sensor circuit, Exhaust system leaks.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0151 Nissan Description

The P0151 code for Nissan vehicles indicates a problem with the O2 sensor circuit for Bank 2 Sensor 1. The O2 sensor, also known as the oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases. Bank 2 Sensor 1 specifically refers to the sensor located on the side of the engine with cylinder number 2, and it is the sensor positioned before the catalytic converter in the exhaust system.

OBDII Code P0151 Nissan - O2 Sensor Circuit Low Bank 2 Sensor 1
P0151 Nissan Code - O2 Sensor Circuit Low Bank 2 Sensor 1

Common Causes of P0151 Nissan

  1. Faulty O2 sensor
  2. Wiring or connector issues in the O2 sensor circuit
  3. Exhaust system leaks
  4. Vacuum leaks
  5. Engine running rich or lean

Symptoms of P0151 Nissan

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Engine misfires
  4. Poor acceleration
  5. Check Engine Light illuminated on the dashboard

How to Fix P0151 Nissan

  1. Use an OBD-II scanner to confirm the P0151 code and pinpoint the exact issue.
  2. Inspect the wiring and connectors related to Bank 2 Sensor 1 for any damage or corrosion.
  3. Test the O2 sensor using a multimeter to check for proper voltage output.
  4. Replace the O2 sensor if it is faulty, ensuring to install the correct sensor for Bank 2 Sensor 1.
  5. Clear the code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0151 Nissan

The cost of repairing a P0151 code on a Nissan can vary depending on the specific cause of the issue. In general, the cost of replacing an O2 sensor can range from $100 to $300, including parts and labor. Additional costs may be incurred if there are wiring or connector issues that need to be addressed. It's recommended to consult with a trusted auto repair shop for an accurate estimate tailored to your vehicle.

What does this mean?

Tech Notes for P0151 Nissan

Replacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem.

For Nissan models 2005 and up see: P0151 Nissan

When is the Code Detected?

The response of the voltage signal from the sensor takes more than the specified time.

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Information for Specific Nissan Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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