AutoCodes – Honda – P0135 2000 Honda Civic

P0135 2000 Honda Civic Code - O2 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 2000 Honda Civic indicates O2 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 28,483

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 2000 Honda Civic 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 2000 Honda Civic - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1 - AutoCodes.com — P0135 2000 Honda Civic Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0135 2000 Honda Civic?

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 2000 Honda Civic?

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 2000 Honda Civic 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 2000 Honda Civic Code

1. What does the OBDII code P0135 mean for a 2000 Honda Civic?

The code P0135 indicates an O2 sensor heater circuit malfunction in Bank 1 Sensor 1 of the exhaust system.

2. What are the common symptoms of a P0135 error in a 2000 Honda Civic?

Common symptoms may include poor fuel economy, rough idling, engine misfires, and an illuminated check engine light on the dashboard.

3. What are the possible causes of a P0135 code in a 2000 Honda Civic?

Possible causes include a faulty O2 sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a problem with the engine control module (ECM).

4. How can I diagnose a P0135 error in my 2000 Honda Civic?

Diagnosing a P0135 error involves checking the O2 sensor's wiring and connectors for damage, testing the sensor's heater circuit, and scanning for related codes with an OBDII scanner.

5. Can I drive my 2000 Honda Civic with a P0135 code?

It is not recommended to drive your vehicle with a P0135 code, as it can lead to decreased fuel efficiency and potential damage to the catalytic converter over time.

6. How can I repair a P0135 code in my 2000 Honda Civic?

Repairing a P0135 code may involve replacing the faulty O2 sensor, repairing damaged wiring or connectors, replacing blown fuses, or reprogramming the ECM if needed.

7. Are there any DIY tips for fixing a P0135 error in a 2000 Honda Civic?

While replacing the O2 sensor or fuses can be done by DIY enthusiasts, diagnosing and repairing wiring issues or ECM problems may require professional help.

8. How much does it cost to fix a P0135 error in a 2000 Honda Civic?

The cost of fixing a P0135 error can vary depending on the root cause of the issue, but it may range from around $100 for a DIY sensor replacement to a few hundred dollars for more complex repairs at a mechanic.

9. How long does it take to repair a P0135 code in a 2000 Honda Civic?

The repair time for a P0135 code can vary based on the specific issue, but simple fixes like replacing an O2 sensor can typically be done within an hour, while more complex repairs may take longer.

10. Can a P0135 code in a 2000 Honda Civic cause other problems if left unfixed?

If left unfixed, a P0135 code can lead to decreased engine performance, increased emissions, and potential damage to the catalytic converter in the long run.