AutoCodes – Toyota – P0135 1998 Toyota Camry

P0135 1998 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 1998 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 9,672

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 1998 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 1998 Toyota Camry - Heated Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com — P0135 1998 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 1998 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 1998 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 1998 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 1998 Toyota Camry Code

1. What does the OBDII code P0135 mean for a 1998 Toyota Camry?

The code P0135 indicates a Heated Oxygen Sensor Heater Circuit Malfunction for Bank 1 Sensor 1 in a 1998 Toyota Camry.

2. What are the common symptoms of a P0135 error in a 1998 Toyota Camry?

Common symptoms of a P0135 error include poor fuel economy, rough idling, engine misfires, and the illumination of the Check Engine Light.

3. What are the possible causes of a P0135 error in a 1998 Toyota Camry?

Possible causes of a P0135 error include a faulty oxygen sensor, damaged wiring or connectors, blown fuses, or issues with the engine control module.

4. How can I diagnose a P0135 error in my 1998 Toyota Camry?

Diagnosing a P0135 error involves checking the oxygen sensor's wiring and connectors, testing the sensor's heater circuit, and inspecting related fuses and components.

5. Can I continue driving my 1998 Toyota Camry with a P0135 error code?

It is not recommended to continue driving your vehicle with a P0135 error, as it can lead to decreased fuel efficiency and potential damage to the engine over time.

6. How can I repair a P0135 error in my 1998 Toyota Camry?

Repairing a P0135 error may involve replacing the oxygen sensor, repairing damaged wiring or connectors, checking and replacing fuses if necessary, and clearing the error code.

7. Is it possible to reset the P0135 error code in a 1998 Toyota Camry?

You can reset the P0135 error code in a 1998 Toyota Camry using an OBDII scanner or by disconnecting the car's battery for a few minutes to clear the error code.

8. How much does it cost to fix a P0135 error in a 1998 Toyota Camry?

The cost of fixing a P0135 error in a 1998 Toyota Camry can vary depending on the cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a P0135 error in a 1998 Toyota Camry cause emissions test failure?

Yes, a P0135 error can cause your 1998 Toyota Camry to fail emissions testing, as it indicates a malfunction in the oxygen sensor heater circuit, affecting the vehicle's emissions control.

10. How often should the oxygen sensor be replaced in a 1998 Toyota Camry to prevent P0135 errors?

It is recommended to replace the oxygen sensor in a 1998 Toyota Camry every 60,000 to 90,000 miles to prevent P0135 errors and maintain optimal engine performance.