AutoCodes – Nissan – P0158 2009 Nissan Pathfinder

P0158 2009 Nissan Pathfinder Code - HO2S22 Circuit High Voltage

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: P0158 2009 Nissan Pathfinder indicates HO2S22 Circuit High Voltage.
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 2,697

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0158 2009 Nissan Pathfinder 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 P0158 2009 Nissan Pathfinder - HO2S22 Circuit High Voltage - AutoCodes.com — P0158 2009 Nissan Pathfinder Code - HO2S22 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0158 2009 Nissan Pathfinder?

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
Exhaust gas leaks

How to Fix the DTC P0158 2009 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.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0158 2009 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.

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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 P0158 2009 Nissan Pathfinder Code

1. What does the OBDII code P0158 on a 2009 Nissan Pathfinder mean?

This code, HO2S22 Circuit High Voltage, indicates a problem with the oxygen sensor (HO2S) bank 2 sensor 2 in the exhaust system.

2. What are some common symptoms of the P0158 code in a 2009 Nissan Pathfinder?

Common symptoms include poor fuel economy, rough idling, engine misfires, and an illuminated check engine light on the dashboard.

3. What are possible causes of the P0158 code in a 2009 Nissan Pathfinder?

Potential causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's air-fuel mixture.

4. How can I diagnose the P0158 code on my 2009 Nissan Pathfinder?

Diagnosing the P0158 code typically involves using an OBDII scanner to retrieve the code, inspecting the oxygen sensor and its wiring, and checking for any exhaust leaks in the system.

5. Can I still drive my 2009 Nissan Pathfinder with the P0158 code present?

It is not recommended to drive your vehicle with the P0158 code present, as it can lead to decreased fuel efficiency and potentially cause damage to the engine over time.

6. How can I repair the P0158 code on my 2009 Nissan Pathfinder?

Repairing the P0158 code may involve replacing the oxygen sensor, repairing any damaged wiring or connectors, fixing exhaust leaks, or addressing any issues with the air-fuel mixture.

7. Is it possible to clear the P0158 code on a 2009 Nissan Pathfinder without fixing the underlying issue?

While you can clear the code with an OBDII scanner, it is essential to address the underlying problem to prevent the issue from recurring.

8. How much does it typically cost to fix the P0158 code on a 2009 Nissan Pathfinder?

The cost of fixing the P0158 code can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

9. How often should I replace the oxygen sensors in my 2009 Nissan Pathfinder?

Oxygen sensors typically last around 100,000 miles, but it is a good idea to inspect them regularly and replace them as needed to maintain optimal engine performance.

10. Can I prevent the P0158 code from appearing in the future on my 2009 Nissan Pathfinder?

Regular maintenance, such as checking for exhaust leaks, ensuring proper engine tune-up, and using high-quality fuel, can help prevent the recurrence of the P0158 code.