AutoCodes – Nissan – P0159 2011 Nissan Sentra

P0159 2011 Nissan Sentra Code - HO2S22 Slow Response

Quick Answer

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor 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: P0159 2011 Nissan Sentra indicates HO2S22 Slow Response.
Common causes: Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor 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.

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Code Popularity 2,348

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0159 2011 Nissan Sentra Description

The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. The HO2S output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Engine Control Module (ECM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S generates a voltage between 0.1 and 0.9 V in response to oxygen in the exhaust gas. If the oxygen in the exhaust gas increases, the air-fuel ratio becomes Lean. The ECM interprets Lean when the HO2S voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The ECM interprets Rich when the HO2S voltage is above 0.45 V.

OBDII Code P0159 2011 Nissan Sentra - HO2S22 Slow Response - AutoCodes.com — P0159 2011 Nissan Sentra Code - HO2S22 Slow Response

What does this mean?

What are the Possible Causes of the DTC P0159 2011 Nissan Sentra?

Faulty Rear Heated Oxygen Sensor Bank 2
Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
Rear Heated Oxygen Sensor 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 P0159 2011 Nissan Sentra?

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 does this mean?

Code Tech Notes

Replacing the O2 Sensor 2 usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0159 2011 Nissan Sentra 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 P0159 2011 Nissan Sentra code?

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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.

Frequently Asked Questions about P0159 2011 Nissan Sentra Code

1. What does the OBDII code P0159 on a 2011 Nissan Sentra mean?

This code, labeled as HO2S22 Slow Response, indicates that the oxygen sensor (O2 sensor) located after the catalytic converter in bank 2 sensor 2 is not responding as quickly as expected.

2. What are the common symptoms of OBDII code P0159 on a 2011 Nissan Sentra?

Common symptoms include decreased fuel efficiency, rough idling, engine misfires, and the illumination of the Check Engine Light on the dashboard.

3. What can cause the OBDII code P0159 on a 2011 Nissan Sentra?

Potential causes of this code include a faulty oxygen sensor, wiring issues in the oxygen sensor circuit, exhaust leaks, or a problem with the catalytic converter.

4. How is the OBDII code P0159 on a 2011 Nissan Sentra diagnosed?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and its wiring for damage, checking for exhaust leaks, and testing the catalytic converter's efficiency.

5. Can driving with the OBDII code P0159 on a 2011 Nissan Sentra cause further damage?

Continuing to drive with this code may lead to decreased fuel efficiency, potential damage to the catalytic converter, and increased emissions output.

6. How can the OBDII code P0159 on a 2011 Nissan Sentra be repaired?

Repair options include replacing the faulty oxygen sensor, repairing any damaged wiring, fixing exhaust leaks, or replacing the catalytic converter if necessary.

7. Is it safe to continue driving a 2011 Nissan Sentra with the OBDII code P0159?

While the car may still be operable with this code, it is recommended to address the issue promptly to prevent potential damage to the vehicle and ensure optimal performance.

8. How much does it typically cost to repair the OBDII code P0159 on a 2011 Nissan Sentra?

Repair costs can vary depending on the specific issue causing the code, but replacing an oxygen sensor can range from $200 to $300, while addressing catalytic converter problems may cost more.

9. Can I reset the Check Engine Light after repairing the OBDII code P0159 on a 2011 Nissan Sentra?

Yes, the Check Engine Light can be reset using an OBDII scanner after the repair to clear the code and monitor the system for any recurring issues.

10. How often does the OBDII code P0159 on a 2011 Nissan Sentra reoccur after repair?

If the underlying issue is properly addressed and repaired, the code should not reoccur, but regular maintenance and monitoring of the vehicle's systems are recommended to prevent future problems.