P0151 2011 Nissan Pathfinder Code - Air Fuel Ratio Circuit Low Bank 2 Sensor 1
Quick Answer
The Air Fuel Ratio (A/F) sensor is a planar dual-cell limit current sensor. Common causes include Faulty Air fuel ratio (A/F) sensor 1 bank 2, Air fuel ratio (A/F) sensor 1 bank 2 harness is open or shorted, Air fuel ratio (A/F) sensor 1 bank 2 circuit poor electrical connection. 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 2011 Nissan Pathfinder indicates Air Fuel Ratio Circuit Low Bank 2 Sensor 1.
- Common causes
- Common causes include Faulty Air fuel ratio (A/F) sensor 1 bank 2, Air fuel ratio (A/F) sensor 1 bank 2 harness is open or shorted, Air fuel ratio (A/F) sensor 1 bank 2 circuit poor electrical connection.
- 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.
Code P0151 2011 Nissan Pathfinder Description
The sensor is capable of precise measurement λ= 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide range (0.7 < λ < air).
The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance. An electronic circuit controls the pump current through the oxygen pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at λ = 1. Therefore, the A/F sensor is able to indicate air/fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800°C (1,292 - 1,472°F).
What are the Possible Causes of the DTC P0151 2011 Nissan Pathfinder?
- Faulty Air fuel ratio (A/F) sensor 1 bank 2
- Air fuel ratio (A/F) sensor 1 bank 2 harness is open or shorted
- Air fuel ratio (A/F) sensor 1 bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0151 2011 Nissan Pathfinder?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0151 2011 Nissan Pathfinder 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.
Need more information about the P0151 2011 Nissan Pathfinder code?
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Frequently Asked Questions about P0151 2011 Nissan Pathfinder Code
1. What does the OBDII code P0151 for a 2011 Nissan Pathfinder mean?
The code P0151 indicates a potential issue with the Air Fuel Ratio Circuit Low on Bank 2 Sensor 1 in the vehicle's oxygen sensor.
2. What are the common symptoms of OBDII code P0151 in a 2011 Nissan Pathfinder?
Common symptoms of code P0151 may include poor fuel efficiency, rough idling, hesitation during acceleration, and an illuminated Check Engine Light on the dashboard.
3. What are the possible causes of the P0151 code in a 2011 Nissan Pathfinder?
The code P0151 can be triggered by issues such as a faulty oxygen sensor, wiring problems, vacuum leaks, exhaust system leaks, or a malfunctioning engine control module (ECM).
4. How can I diagnose the P0151 code in my 2011 Nissan Pathfinder?
To diagnose the P0151 code, you can use an OBDII scanner to retrieve the code, visually inspect the wiring and connectors related to Bank 2 Sensor 1, and perform a voltage test on the oxygen sensor.
5. Can I continue driving my 2011 Nissan Pathfinder with the P0151 trouble code?
While the vehicle may still be driveable with the P0151 code, it is recommended to address the issue promptly to prevent potential damage to the engine and ensure optimal performance.
6. How can I repair the P0151 code on a 2011 Nissan Pathfinder?
Repairing the P0151 code may involve replacing the Bank 2 Sensor 1 oxygen sensor, repairing any damaged wiring or connectors, fixing vacuum or exhaust leaks, or reprogramming the ECM.
7. Is it possible to reset the P0151 code on a 2011 Nissan Pathfinder without fixing the underlying issue?
Resetting the code without addressing the root cause will only temporarily turn off the Check Engine Light. The code is likely to reappear if the underlying problem is not resolved.
8. Can a DIY enthusiast fix the P0151 code on a 2011 Nissan Pathfinder?
Depending on your mechanical skills and access to tools, it is possible to address the P0151 code as a DIY project by following repair guides or seeking assistance from online forums.
9. How much does it cost to repair the P0151 code in a 2011 Nissan Pathfinder?
The cost of repairing the P0151 code can vary depending on the specific issue causing the code, the labor rates in your area, and whether you choose to do the repair yourself or take it to a professional mechanic.
10. How often does the P0151 code occur in a 2011 Nissan Pathfinder?
The occurrence of the P0151 code can vary depending on the vehicle's maintenance history, driving conditions, and age. Regular maintenance and timely repairs can help reduce the likelihood of encountering this code.
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