AutoCodes – Nissan – P0158 2012 Nissan Pathfinder

P0158 2012 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 2012 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 3,153

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 2012 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 2012 Nissan Pathfinder - HO2S22 Circuit High Voltage - AutoCodes.com — P0158 2012 Nissan Pathfinder Code - HO2S22 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0158 2012 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 2012 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 2012 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 P0158 2012 Nissan Pathfinder 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 P0158 2012 Nissan Pathfinder Code

1. What does the OBDII code P0158 for a 2012 Nissan Pathfinder indicate?

The code P0158 refers to a fault in the HO2S22 (Heated Oxygen Sensor 2 Bank 2) circuit, signaling high voltage.

2. What are common symptoms of the HO2S22 Circuit High Voltage issue in a 2012 Nissan Pathfinder?

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

3. What are the possible causes of the P0158 code on a 2012 Nissan Pathfinder?

Potential causes include a faulty HO2S22 sensor, wiring issues in the sensor circuit, exhaust leaks, or an engine vacuum leak.

4. How can I diagnose the HO2S22 Circuit High Voltage problem in my 2012 Nissan Pathfinder?

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

5. Can I drive my 2012 Nissan Pathfinder with the P0158 code?

It is generally not recommended to drive with the P0158 code as it can lead to poor engine performance and potential damage if left unresolved.

6. How can I repair the HO2S22 Circuit High Voltage issue in my 2012 Nissan Pathfinder?

Repair options include replacing the faulty HO2S22 sensor, repairing damaged wiring, fixing any exhaust leaks, and clearing the trouble code with an OBDII scanner.

7. Is it possible to reset the P0158 code on a 2012 Nissan Pathfinder without fixing the issue?

While you can clear the code with a scanner, it is crucial to address the underlying problem to prevent further issues and ensure proper vehicle operation.

8. How much does it cost to fix the HO2S22 Circuit High Voltage problem in a 2012 Nissan Pathfinder?

The cost of repair can vary depending on the cause of the issue, but generally, replacing the HO2S22 sensor can range from $100 to $300, not including labor.

9. Can a DIY enthusiast fix the P0158 code in a 2012 Nissan Pathfinder?

If you have the necessary tools and knowledge, you may be able to replace the HO2S22 sensor yourself. However, it's recommended to consult a professional if you're unsure.

10. How often does the HO2S22 Circuit High Voltage issue occur in a 2012 Nissan Pathfinder?

While not extremely common, issues with the HO2S22 sensor can arise due to wear and tear or other factors, so it's essential to address them promptly.