AutoCodes – Ford – P0133 2008 Ford Fusion

P0133 2008 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 2008 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.
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Code Popularity 4,558
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 P0133 2008 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 2008 Ford Fusion - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 - AutoCodes.com
P0133 2008 Ford Fusion Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

What are the Possible Causes of the DTC P0133 2008 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 2008 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0133 2008 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 2008 Ford Fusion 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 P0133 2008 Ford Fusion Code

1. What does OBDII code P0133 on a 2008 Ford Fusion mean?

This code refers to an O2 sensor circuit slow response on Bank 1 Sensor 1, indicating that the oxygen sensor located before the catalytic converter is not responding as quickly as expected.

2. What are the common symptoms of O2 sensor circuit slow response Bank 1 Sensor 1 in a 2008 Ford Fusion?

Common symptoms include decreased fuel efficiency, rough idling, poor engine performance, and potential issues with passing emissions tests.

3. What are the possible causes of OBDII code P0133 on a 2008 Ford Fusion?

Potential causes include a faulty oxygen sensor, wiring issues in the O2 sensor circuit, vacuum leaks, exhaust leaks, or a problem with the engine's air-fuel mixture.

4. How do I diagnose the O2 sensor circuit slow response Bank 1 Sensor 1 issue on a 2008 Ford Fusion?

Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, conducting a visual inspection of the oxygen sensor and its wiring, and performing tests to check the sensor's response time.

5. Can I drive my 2008 Ford Fusion with OBDII code P0133?

While you may be able to drive with this code present, it is recommended to address the underlying issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.

6. How can I repair O2 sensor circuit slow response Bank 1 Sensor 1 on a 2008 Ford Fusion?

Repair options may include replacing the oxygen sensor, repairing damaged wiring, fixing vacuum or exhaust leaks, or addressing issues related to the air-fuel mixture in the engine.

7. How much does it cost to fix OBDII code P0133 on a 2008 Ford Fusion?

The cost of repairs can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor if the oxygen sensor needs replacement.

8. Are there any DIY tips for troubleshooting O2 sensor circuit slow response Bank 1 Sensor 1 in a 2008 Ford Fusion?

You can visually inspect the oxygen sensor and its wiring for any visible damage, check for vacuum or exhaust leaks, and ensure proper connection of the sensor to the vehicle's electrical system.

9. Will resetting the OBDII code P0133 on a 2008 Ford Fusion make it go away permanently?

Resetting the code may temporarily clear the check engine light, but if the underlying issue is not addressed, the code is likely to reappear after driving the vehicle for a certain period of time.

10. How often should I replace the O2 sensor on my 2008 Ford Fusion to prevent OBDII code P0133 from occurring?

It is recommended to replace the oxygen sensor according to the manufacturer's recommended maintenance schedule or if you experience symptoms indicating a faulty sensor, such as decreased fuel efficiency or rough idling.

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