AutoCodes – Ford – P0133 Ford

P0133 Ford 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 Ford 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 77,011

How popular is this code, among other codes? Medium

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 30, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0133 Ford 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 the 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 Ford - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 - AutoCodes.com — P0133 Ford Code - O2 Sensor Circuit Slow Response Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0133 Ford?

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 Ford?

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.

There is a factory service bulletin for the 2011-2012 F-Super Duty:
2011-2012 Ford F-Super Duty Factory Service Bulletin OBDII Code P0133

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0133 Ford 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 Ford code?

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

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Information for Specific Ford Models

P0133 1997 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 1998 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 1999 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2000 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2001 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2002 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2003 Ford F150 — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2006 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2007 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2008 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2009 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2010 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2011 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1
P0133 2012 Ford Fusion — O2 Sensor Circuit Slow Response Bank 1 Sensor 1

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 Ford Code

1. What are the common symptoms of OBDII code P0133 for a Ford vehicle?

- Common symptoms include poor fuel economy, rough idling, hesitation during acceleration, and a check engine light illuminated on the dashboard.

2. What does the OBDII code P0133 on a Ford indicate?

- The code P0133 indicates a slow response from the O2 sensor located in Bank 1 Sensor 1 of the vehicle's exhaust system.

3. What are the possible causes of OBDII code P0133 in a Ford?

- The common causes include a faulty O2 sensor, wiring issues in the O2 sensor circuit, exhaust leaks, or problems with the engine's fuel system.

4. How can I diagnose the O2 sensor circuit slow response issue in a Ford vehicle?

- Diagnosing this issue typically involves using a scan tool to monitor the O2 sensor's response time, checking the wiring for any damage, and inspecting the exhaust system for leaks.

5. Can driving with OBDII code P0133 on a Ford vehicle cause further damage?

- While driving with this code may not immediately cause damage, it can lead to decreased fuel efficiency and potentially harm the vehicle's catalytic converter over time.

6. How can I repair OBDII code P0133 in a Ford?

- Repair options include replacing the O2 sensor in Bank 1 Sensor 1, repairing any damaged wiring, fixing exhaust leaks, or addressing any issues in the fuel system that may be affecting sensor performance.

7. Is it safe to continue driving a Ford vehicle with OBDII code P0133?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential long-term damage and ensure optimal performance.

8. Can OBDII code P0133 be triggered by a loose gas cap in a Ford vehicle?

- While a loose gas cap can trigger other codes related to the evaporative emission system, it is unlikely to cause OBDII code P0133 specifically, which is related to the O2 sensor circuit.

9. How do I reset the check engine light after repairing OBDII code P0133 in a Ford?

- The check engine light can be reset using an OBDII scan tool or by disconnecting the vehicle's battery for a few minutes to clear the stored fault codes.

10. What is the role of the O2 sensor in Bank 1 Sensor 1 in a Ford vehicle?

- The O2 sensor in Bank 1 Sensor 1 monitors the oxygen levels in the exhaust gases, providing feedback to the engine control module to adjust the air-fuel mixture for optimal combustion efficiency.