AutoCodes – Honda – P0158 Honda

P0158 Honda Code - O2 Sensor Circuit High Voltage Bank 2 Sensor 2

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 Honda indicates O2 Sensor Circuit High Voltage Bank 2 Sensor 2.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 20,994
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0158 Honda 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 Honda - O2 Sensor Circuit High Voltage Bank 2 Sensor 2 - AutoCodes.com
P0158 Honda Code - O2 Sensor Circuit High Voltage Bank 2 Sensor 2

What are the Possible Causes of the DTC P0158 Honda?

  • 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 Honda?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0158 Honda 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 Honda 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 Honda Code

1. What is the OBDII code P0158 Honda indicating?

The code P0158 in a Honda refers to an issue with the O2 Sensor Circuit High Voltage Bank 2 Sensor 2.

2. What are common symptoms of the P0158 OBDII code in a Honda?

Common symptoms of code P0158 may include poor fuel economy, rough idling, stalling, and an illuminated check engine light.

3. What causes the P0158 OBDII code to appear in a Honda?

The P0158 code in a Honda is commonly triggered by a faulty O2 sensor, wiring issues, exhaust leaks, or a failing catalytic converter.

4. How can I diagnose the cause of the P0158 OBDII code in my Honda?

Diagnosing the P0158 code typically involves inspecting the O2 sensor and its wiring, checking for exhaust leaks, and testing the catalytic converter's efficiency.

5. Can I continue driving my Honda with the P0158 OBDII code present?

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

6. How do I repair the P0158 OBDII code in my Honda?

Repairing the P0158 code may involve replacing the Bank 2 Sensor 2 O2 sensor, repairing any damaged wiring, fixing exhaust leaks, or replacing a failing catalytic converter.

7. Is it possible to reset the P0158 OBDII code in a Honda without fixing the underlying issue?

Resetting the code without addressing the root cause will only temporarily turn off the check engine light, but the issue will likely reappear.

8. How can I prevent the P0158 OBDII code from reoccurring in my Honda?

To prevent the P0158 code from coming back, make sure to perform regular maintenance, fix any exhaust leaks promptly, and use high-quality fuel.

9. Can a DIY enthusiast fix the P0158 OBDII code issue in a Honda?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the P0158 code by replacing the O2 sensor or fixing wiring issues.

10. Will a Honda dealership be able to help me with the P0158 OBDII code problem?

Yes, a Honda dealership or a qualified mechanic with experience in diagnosing and repairing OBDII codes can assist you in resolving the P0158 issue effectively.

Discuss the causes and fixes for P0158 Honda OBDII Code

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