P0135 1999 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 1999 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.
Code P0135 1999 Honda Civic Description
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.
What are the Possible Causes of the DTC P0135 1999 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 1999 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0135 1999 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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Frequently Asked Questions about P0135 1999 Honda Civic Code
1. What does the OBDII code P0135 on a 1999 Honda Civic indicate?
- This code indicates an O2 Sensor Heater Circuit Malfunction for Bank 1 Sensor 1.
2. What are the common symptoms of P0135 in a 1999 Honda Civic?
- Common symptoms include poor fuel economy, rough idling, and the illumination of the Check Engine Light.
3. What are the possible causes of the O2 Sensor Heater Circuit Malfunction in a 1999 Honda Civic?
- Possible causes include a faulty O2 sensor, damaged wiring or connectors, a blown fuse, or a defective PCM.
4. How can I diagnose the O2 Sensor Heater Circuit issue in my 1999 Honda Civic?
- You can use a multimeter to check for continuity in the sensor's heater circuit, inspect the wiring for any damage, and test the O2 sensor for proper function.
5. Can I drive my 1999 Honda Civic with the P0135 code?
- It is not recommended to drive with the P0135 code as it can lead to decreased fuel efficiency and potential damage to the catalytic converter.
6. How do I repair the O2 Sensor Heater Circuit Malfunction in my 1999 Honda Civic?
- The repair typically involves replacing the faulty O2 sensor, repairing any damaged wiring or connectors, and resetting the fault code using an OBDII scanner.
7. Are there any DIY tips for fixing the P0135 code on a 1999 Honda Civic?
- DIY tips include ensuring the O2 sensor is the correct part for your vehicle, checking the fuse for the heater circuit, and inspecting the wiring carefully for any issues.
8. How much does it cost to repair the O2 Sensor Heater Circuit Malfunction in a 1999 Honda Civic?
- The cost can vary depending on the extent of the issue, but typically ranges from $100 to $300 for parts and labor.
9. Can a P0135 code be triggered by other underlying issues in a 1999 Honda Civic?
- Yes, other issues such as exhaust leaks, vacuum leaks, or engine misfires can sometimes trigger the P0135 code in addition to the O2 sensor heater circuit problem.
10. How often should the O2 sensor be replaced in a 1999 Honda Civic?
- O2 sensors typically last around 100,000 miles, but it's recommended to follow the manufacturer's maintenance schedule for inspection and replacement if necessary.
Discuss the causes and fixes for P0135 1999 Honda Civic OBDII Code
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I replace the spark plugs and the brakes and now I need to do the sensors.
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