AutoCodes – Honda – P0136 Honda

P0136 Honda Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

Quick Answer

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the three-way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted. 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: P0136 Honda indicates Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2.
Common causes: Common causes include Exhaust gas leaks, Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1, Heated Oxygen Sensor 2 Bank 1 harness is open or shorted.
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 Step-by-Step Diagnostic Guide My Repairs

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

Code Popularity 3,844

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 Nov 25, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

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

Code P0136 Honda Description

The Heated Oxygen Sensor 2 (HO2S2) (Downstream), after the 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 maintain near the ideal stoichiometric ratio. The HO2S2 output voltage changes suddenly in the vicinity of the stoichiometric ratio. The Powertrain Control Module (PCM) adjusts the fuel injection time so that the air-fuel ratio is nearly stoichiometric. The HO2S2 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 PCM interprets Lean when the HO2S2 voltage is below 0.45 V. If the oxygen in the exhaust gas decreases, the air-fuel ratio becomes Rich. The PCM interprets Rich when the HO2S2 voltage is above 0.45 V. The P0136 code will set when the PCM detects that the HO2S2 signal voltage is out of range for an extended period.

OBDII Code P0136 Honda - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 - AutoCodes.com — P0136 Honda Code - Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P0136 Honda?

Exhaust gas leaks
Faulty Heated Oxygen Sensor 2 (HO2S2) (Downstream) Bank 1
Heated Oxygen Sensor 2 Bank 1 harness is open or shorted
Heated Oxygen Sensor 2 Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors

How to Fix the DTC P0136 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0136 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 P0136 Honda code?

Need more information on how to fix the P0136 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0136 Honda 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 P0136 Honda Code

1. What are the common symptoms of OBDII code P0136 in a Honda, indicating a Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2?

- Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated Check Engine light.

2. What are the possible causes of the P0136 code on a Honda related to the Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2?

- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's computer.

3. How can I diagnose the P0136 code on my Honda myself?

- You can diagnose the issue by using an OBDII scanner to read the code, visually inspecting the sensor and its connections, and testing the sensor's voltage and resistance.

4. Can I drive my Honda with the P0136 code present, indicating a Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2?

- It is not recommended to drive with this code present, as it can lead to decreased fuel efficiency and potential engine damage if left unresolved.

5. How much does it typically cost to repair the P0136 code on a Honda?

- Repair costs can vary depending on the exact cause of the issue, but it can range from $100 to $300 for parts and labor.

6. Are there any DIY tips for fixing the P0136 code on a Honda?

- DIY tips include checking and cleaning the oxygen sensor connections, inspecting for exhaust leaks, and testing the sensor's voltage output.

7. How urgent is it to address the P0136 code in a Honda?

- While the car may still be driveable with this code present, it is important to address it promptly to prevent further damage to the engine and ensure optimal fuel efficiency.

8. Can a faulty Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 impact the overall performance of my Honda?

- Yes, a faulty sensor can lead to decreased fuel efficiency, rough idling, and overall poor engine performance.

9. Is it necessary to reset the Check Engine light after repairing the P0136 code on a Honda?

- Yes, it is recommended to reset the Check Engine light using an OBDII scanner after resolving the issue to ensure the system recognizes the repair.

10. How long does it typically take to repair the Heated Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2 issue in a Honda?

- The repair time can vary depending on the exact cause and complexity of the repair, but it usually takes around 1-2 hours for a professional mechanic to complete the job.