AutoCodes – Toyota – P0135 2001 Toyota Camry

P0135 2001 Toyota Camry Code - Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Quick Answer

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground. 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: P0135 2001 Toyota Camry indicates Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1.
Common causes: Common causes include Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse, Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground.
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 7,548

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 Apr 22, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0135 2001 Toyota Camry Description

Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

OBDII Code P0135 2001 Toyota Camry - Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com — P0135 2001 Toyota Camry Code - Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2001 Toyota Camry?

Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0135 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 does this mean?

Code Tech Notes

The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0135 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 P0135 2001 Toyota Camry Code

1. What does the OBDII code P0135 mean for a 2001 Toyota Camry?

The code P0135 indicates a malfunction in the heated oxygen sensor heater circuit of Bank 1 Sensor 1 in a 2001 Toyota Camry.

2. What are the common symptoms of a P0135 code in a 2001 Toyota Camry?

Common symptoms of a P0135 code include poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light on the dashboard.

3. What can cause the P0135 code to trigger in a 2001 Toyota Camry?

The P0135 code in a 2001 Toyota Camry is often triggered by a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or a problem with the sensor's internal heater.

4. How can I diagnose the cause of a P0135 code in my 2001 Toyota Camry?

To diagnose a P0135 code, you can start by checking the oxygen sensor's wiring and connectors for any visible damage. Testing the sensor's internal heater and inspecting the fuse related to the sensor can also help identify the issue.

5. What are the potential repair options for a P0135 code in a 2001 Toyota Camry?

Repair options for a P0135 code may include replacing the heated oxygen sensor, repairing damaged wiring or connectors, checking and replacing the fuse if necessary, or addressing any underlying issues that may have caused the malfunction.

6. Can I drive my 2001 Toyota Camry with a P0135 code?

While it is possible to drive with a P0135 code, it is not recommended as it can lead to reduced fuel efficiency and engine performance. It is best to address the issue promptly to prevent further damage.

7. How much does it typically cost to repair a P0135 code in a 2001 Toyota Camry?

The cost of repairing a P0135 code in a 2001 Toyota Camry can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor.

8. Will resetting the check engine light resolve a P0135 code in a 2001 Toyota Camry?

Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the P0135 code. It is important to diagnose and repair the problem to prevent further complications.

9. How often does the heated oxygen sensor heater circuit malfunction in a 2001 Toyota Camry?

The heated oxygen sensor heater circuit malfunction in a 2001 Toyota Camry can occur due to various factors and is not uncommon as the vehicle ages. Regular maintenance and timely repairs can help prevent such issues.

10. Can a P0135 code affect the emissions of a 2001 Toyota Camry?

Yes, a P0135 code can impact the emissions of a 2001 Toyota Camry by causing the vehicle to run inefficiently and produce higher emissions. It is important to address the code to ensure the vehicle meets emission standards.