AutoCodes – Nissan – P0159 2006 Nissan Altima Sedan

P0159 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,253

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0159 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan - HO2S22 Slow Response - AutoCodes.com — P0159 2006 Nissan Altima Sedan Code - HO2S22 Slow Response

What does this mean?

What are the Possible Causes of the DTC P0159 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan code?

Need more information on how to fix the P0159 2006 Nissan Altima Sedan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0159 2006 Nissan Altima Sedan code diagnosed by a professional: Find a repair shop in your area

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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P0159 on a 2006 Nissan Altima Sedan?

- Common symptoms include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.

2. What does the OBDII code P0159 indicate in a 2006 Nissan Altima Sedan?

- The code P0159 indicates a slow response time from the downstream oxygen sensor (HO2S22) located after the catalytic converter.

3. What are the possible causes of OBDII code P0159 in a 2006 Nissan Altima Sedan?

- Possible causes include a faulty oxygen sensor, wiring issues, exhaust system leaks, engine misfires, or a malfunctioning catalytic converter.

4. How can I diagnose the cause of OBDII code P0159 in my 2006 Nissan Altima Sedan?

- Diagnose the code by inspecting the oxygen sensor wiring, checking for exhaust leaks, verifying the sensor's operation, and conducting a thorough scan of the vehicle's systems.

5. Can a dirty air filter cause OBDII code P0159 on a 2006 Nissan Altima Sedan?

- While a dirty air filter may not directly cause P0159, it can affect the overall performance of the engine and potentially lead to issues that trigger the code.

6. How should I repair OBDII code P0159 on my 2006 Nissan Altima Sedan?

- Repair options include replacing the downstream oxygen sensor, fixing any wiring issues, addressing exhaust leaks, resolving engine misfires, or replacing the catalytic converter if necessary.

7. Is it safe to continue driving my 2006 Nissan Altima Sedan with OBDII code P0159?

- It is generally not recommended to drive with a persistent check engine light or unresolved OBDII code, as it can lead to further damage and reduced vehicle performance.

8. Can resetting the check engine light temporarily fix OBDII code P0159 on a 2006 Nissan Altima Sedan?

- Resetting the check engine light may temporarily turn it off, but if the underlying issue causing the code is not addressed, the light is likely to come back on.

9. How often should I replace the oxygen sensors in my 2006 Nissan Altima Sedan to prevent OBDII code P0159?

- Oxygen sensors typically last around 60,000 to 90,000 miles, but it's a good practice to follow the manufacturer's recommended maintenance schedule for sensor replacement.

10. Will using higher octane fuel help prevent OBDII code P0159 in a 2006 Nissan Altima Sedan?

- While using higher octane fuel may provide some performance benefits, it is unlikely to prevent or resolve OBDII code P0159, as the issue is related to the oxygen sensor's response time.