AutoCodes – Ford – P0133 2010 Ford Fusion

P0133 2010 Ford Fusion Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

Quick Answer

The powertrain control module(PCM) commands an air/fuel ratio that changes in the shape of a square wave. 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 2010 Ford Fusion 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 2,980

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
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

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

Code P0133 2010 Ford Fusion Description

The powertrain control module(PCM) commands an air/fuel ratio that changes in the shape of a square wave. The PCM calculates the length of the resulting signal from the HO2S. The test fails when the length of the signal is less than a calibrated limit.

OBDII Code P0133 2010 Ford Fusion - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 - AutoCodes.com — P0133 2010 Ford Fusion Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0133 2010 Ford Fusion?

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 2010 Ford Fusion?

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 Front Heated Oxygen Sensor Bank 1 usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0133 2010 Ford Fusion 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 2010 Ford Fusion code?

Need more information on how to fix the P0133 2010 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0133 2010 Ford Fusion 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 2010 Ford Fusion Code

1. What does the OBDII code P0133 mean on a 2010 Ford Fusion?

P0133 indicates that the oxygen sensor on Bank 1 Sensor 1 is experiencing a slow response time when switching between rich and lean fuel conditions.

2. What are the symptoms of code P0133 in a 2010 Ford Fusion?

Common symptoms include reduced fuel efficiency, rough idling, hesitation during acceleration, and the check engine light being illuminated.

3. What causes the P0133 code to be triggered?

Potential causes include a failing oxygen sensor, exhaust leaks, a dirty air filter, a faulty mass air flow (MAF) sensor, or issues with the engine control module (ECM).

4. Which oxygen sensor does Bank 1 Sensor 1 refer to?

Bank 1 Sensor 1 is the upstream oxygen sensor located before the catalytic converter on the side of the engine with cylinder 1.

5. Can a dirty or failing oxygen sensor cause the P0133 code?

Yes, a dirty or failing oxygen sensor can slow its response time, leading to the P0133 code being triggered.

6. How can I diagnose the P0133 code on my 2010 Ford Fusion?

Start by inspecting the oxygen sensor wiring and connectors for damage, checking for exhaust leaks, and testing the oxygen sensor with a multimeter or scan tool for proper response times.

7. Is it safe to drive a 2010 Ford Fusion with the P0133 code?

While the car may still run, driving with this code can lead to decreased fuel economy, increased emissions, and potential damage to the catalytic converter over time.

8. How do I fix the P0133 code on a 2010 Ford Fusion?

Common fixes include replacing the upstream oxygen sensor, repairing exhaust leaks, cleaning or replacing the air filter, or addressing any related wiring or connection issues.

9. Can a software update fix the P0133 code in a 2010 Ford Fusion?

In rare cases, a software update to the ECM may help if the issue is related to calibration or sensor response thresholds.

10. How much does it cost to fix the P0133 code on a 2010 Ford Fusion?

The cost varies but typically ranges from $150 to $300 for parts and labor if replacing the oxygen sensor is required. Additional repairs for exhaust leaks or wiring issues may increase costs.