P0135 1998 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 1998 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 1998 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 1998 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 1998 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 1998 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 1998 Honda Civic Code
1. What does OBDII code P0135 on a 1998 Honda Civic mean?
- This code indicates a malfunction in the O2 sensor heater circuit for Bank 1 Sensor 1, which is the upstream oxygen sensor located before the catalytic converter.
2. What are common symptoms of O2 sensor heater circuit malfunction (P0135) in a 1998 Honda Civic?
- Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
3. What are possible causes of OBDII code P0135 in a 1998 Honda Civic?
- The most common causes include a faulty O2 sensor, damaged wiring or connectors, a blown fuse, or a problem with the vehicle's engine control module (ECM).
4. How can I diagnose the O2 sensor heater circuit malfunction in my 1998 Honda Civic?
- You can use a multimeter to test the O2 sensor heater circuit for continuity, check for any damaged wiring or connectors, and inspect the fuse related to the O2 sensor heater.
5. Can I continue driving my 1998 Honda Civic with OBDII code P0135?
- It is generally safe to drive the vehicle for a short period with this code, but it is recommended to address the issue promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance.
6. How can I repair OBDII code P0135 on my 1998 Honda Civic?
- To repair the issue, you may need to replace the O2 sensor, repair any damaged wiring or connectors, replace a blown fuse, or reprogram the engine control module if necessary.
7. Are there any DIY tips for fixing O2 sensor heater circuit malfunction in a 1998 Honda Civic?
- While some repairs may require professional assistance, checking and replacing the O2 sensor, inspecting wiring, and testing the fuse can often be done by DIY enthusiasts with the right tools and knowledge.
8. What is the purpose of the O2 sensor heater circuit in a 1998 Honda Civic?
- The O2 sensor heater circuit helps the O2 sensor reach its operating temperature faster, allowing it to provide accurate readings to the engine control module for optimal fuel efficiency and emissions control.
9. Can a faulty O2 sensor heater circuit cause other issues in a 1998 Honda Civic?
- Yes, a malfunctioning O2 sensor heater circuit can lead to poor engine performance, increased emissions, and potential damage to the catalytic converter if left unresolved.
10. How much does it cost to repair OBDII code P0135 on a 1998 Honda Civic?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.
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