AutoCodes – Honda – P0133 2009 Honda Accord

P0133 2009 Honda Accord Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

Quick Answer

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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: P0133 2009 Honda Accord indicates O2 Sensor Circuit Slow Response Bank 1 Sensor 1.
Common causes: Common causes include Faulty Front Heated Oxygen Sensor Bank 1, Front Heated Oxygen Sensor Bank 1 harness is open or shorted, Front Heated Oxygen Sensor Bank 1 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.

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 5,323

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 Jun 14, 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 P0133 2009 Honda Accord Description

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

OBDII Code P0133 2009 Honda Accord - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 - AutoCodes.com — P0133 2009 Honda Accord Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0133 2009 Honda Accord?

Faulty Front Heated Oxygen Sensor Bank 1
Front Heated Oxygen Sensor Bank 1 harness is open or shorted
Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
Inappropriate fuel pressure
Faulty fuel injectors
Intake air leaks may be faulty
Exhaust gas leaks

How to Fix the DTC P0133 2009 Honda Accord?

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 P0133 2009 Honda Accord 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 P0133 2009 Honda Accord code?

Need more information on how to fix the P0133 2009 Honda Accord code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0133 2009 Honda Accord 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 P0133 2009 Honda Accord Code

1. What does OBDII code P0133 mean for a 2009 Honda Accord?

The code P0133 indicates a slow response from the O2 sensor located in Bank 1 Sensor 1 of the exhaust system in the 2009 Honda Accord.

2. What are the common symptoms of O2 sensor circuit slow response Bank 1 Sensor 1 in a 2009 Honda Accord?

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

3. What are the possible causes of OBDII code P0133 in a 2009 Honda Accord?

Possible causes include a faulty O2 sensor, wiring issues, exhaust leaks, engine misfires, or a vacuum leak.

4. How can I diagnose the O2 sensor circuit slow response Bank 1 Sensor 1 issue in my 2009 Honda Accord?

Diagnosis involves checking the O2 sensor's voltage output, inspecting the wiring for damage, and looking for exhaust leaks or other potential causes of the slow response.

5. Can I drive my 2009 Honda Accord with the O2 sensor circuit slow response Bank 1 Sensor 1 issue?

It is not recommended to drive the vehicle with this issue for an extended period as it can lead to decreased fuel efficiency and potential damage to the engine components.

6. How can I repair the O2 sensor circuit slow response Bank 1 Sensor 1 problem in my 2009 Honda Accord?

Repair options may include replacing the O2 sensor, repairing damaged wiring, fixing exhaust leaks, addressing engine misfires, or resolving any vacuum leaks.

7. Will resetting the check engine light fix the O2 sensor circuit slow response Bank 1 Sensor 1 issue in my 2009 Honda Accord?

Resetting the check engine light may temporarily turn it off, but the underlying problem causing the code P0133 will still need to be diagnosed and repaired to prevent it from reoccurring.

8. How much does it cost to fix the O2 sensor circuit slow response Bank 1 Sensor 1 problem in a 2009 Honda Accord?

The cost of repair can vary depending on the specific issue causing the code P0133, but it may range from $100 to $400 or more, including parts and labor.

9. Can a DIY enthusiast fix the O2 sensor circuit slow response Bank 1 Sensor 1 issue in a 2009 Honda Accord?

Depending on the skill level and tools available, some DIY enthusiasts may be able to replace the O2 sensor or address wiring issues related to the P0133 code.

10. How often should the O2 sensor circuit slow response Bank 1 Sensor 1 be checked in a 2009 Honda Accord?

Regular maintenance and inspection of the O2 sensor and related components are recommended as part of routine vehicle care to prevent issues like slow response and ensure optimal engine performance.