AutoCodes – Toyota – P0135 1997 Toyota Camry

P0135 1997 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 1997 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 12,630

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 1997 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 1997 Toyota Camry - Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com — P0135 1997 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 1997 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 1997 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 1997 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 1997 Toyota Camry Code

1. What does the OBDII code P0135 for a 1997 Toyota Camry indicate?

- The code P0135 indicates a Heated Oxygen Sensor Heater Circuit Malfunction for Bank 1 Sensor 1 in a 1997 Toyota Camry.

2. What are common symptoms of a P0135 code in a 1997 Toyota Camry?

- Common symptoms include poor fuel economy, rough idling, stalling, and the illumination of the Check Engine Light.

3. What are the potential causes of a P0135 code in a 1997 Toyota Camry?

- Possible causes include a faulty oxygen sensor, damaged wiring or connectors, a blown fuse, or issues with the ECM (Engine Control Module).

4. How can I diagnose a P0135 code in my 1997 Toyota Camry?

- Diagnose the code by checking the oxygen sensor's wiring and connections, testing the sensor's heater circuit, and inspecting related fuses.

5. What are the repair options for a P0135 code in a 1997 Toyota Camry?

- Repair options include replacing the faulty oxygen sensor, repairing damaged wiring or connectors, replacing blown fuses, or addressing ECM issues.

6. Can I drive my 1997 Toyota Camry with a P0135 code?

- It is not recommended to drive with a P0135 code as it can lead to decreased fuel efficiency and potential engine performance issues.

7. How much does it cost to fix a P0135 code in a 1997 Toyota Camry?

- The cost to fix a P0135 code can vary depending on the root cause, but it typically ranges from $100 to $300 for parts and labor.

8. How often should the oxygen sensors be replaced in a 1997 Toyota Camry?

- Oxygen sensors generally last between 50,000 to 100,000 miles, so it is recommended to replace them within this mileage range to maintain optimal performance.

9. Is it possible to reset the Check Engine Light after fixing a P0135 code in a 1997 Toyota Camry?

- Yes, the Check Engine Light can be reset using an OBDII scanner after resolving the issue causing the P0135 code.

10. Will a P0135 code cause emissions test failure in a 1997 Toyota Camry?

- Yes, a P0135 code can cause an emissions test failure as it indicates a malfunction in the oxygen sensor heater circuit, which is crucial for emissions control.