AutoCodes – Toyota – P0133 2001 Toyota Camry

P0133 2001 Toyota Camry Code - Heated Oxygen 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 2001 Toyota Camry indicates Heated Oxygen 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 3,924

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
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Code P0133 2001 Toyota Camry 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 2001 Toyota Camry - Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1 - AutoCodes.com — P0133 2001 Toyota Camry Code - Heated Oxygen Sensor Circuit Slow Response Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0133 2001 Toyota Camry?

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 2001 Toyota Camry?

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 2001 Toyota Camry 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.

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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 2001 Toyota Camry Code

1. What does the OBDII code P0133 for a 2001 Toyota Camry mean?

The code P0133 indicates a slow response from the Heated Oxygen Sensor (HO2S) located in Bank 1 Sensor 1 of the vehicle.

2. What are the common symptoms of a P0133 code in a 2001 Toyota Camry?

Common symptoms include decreased fuel efficiency, rough idling, hesitation during acceleration, and potential stalling.

3. What are the possible causes of a P0133 code in a 2001 Toyota Camry?

Potential causes include a faulty oxygen sensor, wiring issues, exhaust leaks, engine misfires, or problems with the fuel system.

4. How can I diagnose the source of a P0133 code in my 2001 Toyota Camry?

Diagnosis typically involves inspecting the oxygen sensor and its wiring, checking for exhaust leaks, testing the fuel system, and scanning for other related trouble codes.

5. Can I continue driving my 2001 Toyota Camry with a P0133 code?

It is not recommended to drive with a P0133 code for an extended period as it can lead to reduced fuel efficiency and potential engine performance issues.

6. How can I repair a P0133 code in my 2001 Toyota Camry?

Repair options may include replacing the Bank 1 Sensor 1 oxygen sensor, repairing damaged wiring, fixing exhaust leaks, addressing engine misfires, or resolving fuel system problems.

7. Is it possible to reset the P0133 code in a 2001 Toyota Camry without fixing the underlying issue?

While resetting the code may temporarily turn off the check engine light, it will not fix the underlying problem causing the P0133 code.

8. How often should the oxygen sensors be replaced in a 2001 Toyota Camry?

Oxygen sensors typically last between 60,000 to 100,000 miles, but it's recommended to follow the manufacturer's maintenance schedule for specific guidance.

9. Can a P0133 code in a 2001 Toyota Camry cause emissions test failure?

Yes, a P0133 code can cause a vehicle to fail an emissions test due to the impact on fuel mixture and emissions control systems.

10. Are there any preventative maintenance tips to avoid a P0133 code in a 2001 Toyota Camry?

Regularly servicing the vehicle, using high-quality fuel, and addressing any engine performance issues promptly can help prevent issues that may trigger a P0133 code.