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Engine-Codes – Infiniti – P0158 2006 Infiniti G35

P0158 2006 Infiniti G35 Code - HO2S22 Circuit High Voltage

Quick Answer

The P0158 code on a 2006 Infiniti G35 refers to an issue with the HO2S22 sensor circuit, specifically indicating high voltage. Common causes include Faulty HO2S22 sensor, Damaged wiring or connectors in the sensor circuit, Engine control module (ECM) malfunction. 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 2006 Infiniti G35 indicates HO2S22 Circuit High Voltage.
Common causes
Common causes include Faulty HO2S22 sensor, Damaged wiring or connectors in the sensor circuit, Engine control module (ECM) malfunction.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0158 2006 Infiniti G35 Description

The P0158 code on a 2006 Infiniti G35 refers to an issue with the HO2S22 sensor circuit, specifically indicating high voltage. The HO2S22 sensor, also known as the downstream oxygen sensor, plays a crucial role in monitoring the oxygen levels in the exhaust gases to ensure proper fuel mixture and emissions control. When the sensor detects a high voltage in the circuit, it means that the oxygen levels in the exhaust are not within the expected range, which can lead to issues with fuel efficiency, emissions, and overall engine performance.

OBDII Code P0158 2006 Infiniti G35 - HO2S22 Circuit High Voltage
P0158 2006 Infiniti G35 Code - HO2S22 Circuit High Voltage

Common Causes of P0158 2006 Infiniti G35

  1. Faulty HO2S22 sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Engine control module (ECM) malfunction
  4. Exhaust leaks near the sensor
  5. Contaminated fuel affecting sensor readings

Symptoms of P0158 2006 Infiniti G35

  1. Decreased fuel efficiency
  2. Rough idling or stalling
  3. Hesitation or jerking during acceleration
  4. Illuminated check engine light
  5. Failed emissions test

How to Fix P0158 2006 Infiniti G35

  1. Use an OBD-II scanner to confirm the P0158 code and diagnose the specific issue with the HO2S22 sensor.
  2. Inspect the sensor wiring and connectors for any damage or corrosion and repair or replace as needed.
  3. Check for exhaust leaks near the sensor and repair any leaks to prevent false readings.
  4. Replace the HO2S22 sensor if it is determined to be faulty or malfunctioning.
  5. Clear the code and perform a test drive to ensure the issue is resolved and the check engine light does not reappear.

Cost to Fix P0158 2006 Infiniti G35

The cost of repairing a P0158 code on a 2006 Infiniti G35 can vary depending on the specific cause of the issue. On average, replacing an oxygen sensor can cost between $200 and $300 for parts and labor. However, if additional repairs or diagnostic work is needed, the total cost could be higher. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's specific needs. Keep in mind that labor rates and part prices can vary based on location and the auto repair shop you choose.

What does this mean?

Tech Notes for P0158 2006 Infiniti G35

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

When is the Code Detected?

The P0158 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time.

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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 2006 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0158 on a 2006 Infiniti G35?

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

2. What does the HO2S22 Circuit High Voltage code mean for a 2006 Infiniti G35?

- The code indicates that the oxygen sensor 2 on bank 2 is detecting a high voltage condition, which can affect the air-fuel mixture and engine performance.

3. What are the possible causes of OBDII code P0158 on a 2006 Infiniti G35?

- Common causes include a faulty oxygen sensor, wiring issues in the sensor circuit, exhaust leaks, and engine misfires.

4. How can I diagnose the source of the high voltage in the HO2S22 circuit on my 2006 Infiniti G35?

- To diagnose the issue, you can use a multimeter to test the oxygen sensor's voltage output, inspect the sensor wiring for damage, and check for any exhaust leaks near the sensor.

5. Can I drive my 2006 Infiniti G35 with an active P0158 trouble code?

- It is not recommended to drive the vehicle with an active P0158 code, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.

6. How can I reset the OBDII code P0158 on my 2006 Infiniti G35 after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the error code.

7. Is it necessary to replace the oxygen sensor to fix OBDII code P0158 on a 2006 Infiniti G35?

- In many cases, replacing the oxygen sensor responsible for the high voltage condition is the most effective way to resolve the P0158 trouble code.

8. Are there any DIY repair tips for addressing OBDII code P0158 on a 2006 Infiniti G35?

- DIY repair tips include checking and cleaning the oxygen sensor connectors, inspecting the sensor wiring for damage, and ensuring there are no exhaust leaks near the sensor.

9. How much does it typically cost to repair OBDII code P0158 on a 2006 Infiniti G35 at a mechanic or dealership?

- The cost of repairing OBDII code P0158 can vary depending on the specific cause, but it may range from $150 to $400 at a mechanic or dealership.

10. What are the long-term effects of ignoring OBDII code P0158 on a 2006 Infiniti G35?

- Ignoring the P0158 code can lead to decreased fuel efficiency, engine performance issues, and potential damage to the catalytic converter over time.

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