The typical cost to replace a single oxygen sensor on a 2008 Honda Civic is about $150 to $350, while replacing both sensors commonly runs $300 to $700, depending on parts and labor choices.
What factors affect the price
Several factors influence the final bill for oxygen-sensor replacement. The following list highlights the main drivers.
- Sensor type and location: Upstream sensors can be more expensive to access and replace than downstream sensors, and some Civic trims may require more time if access is tight.
- Parts choice: Aftermarket sensors are typically cheaper than OEM parts; price varies by brand and whether the sensor is pre-programmed for your vehicle.
- Labor rates: Shops charge by the hour, and rates vary widely by region, shop type (independent vs dealership), and technician expertise.
- Diagnostic work: Some quotes include a diagnostic fee to read codes and confirm the exact sensor issue; others bundle it into the replacement price.
- Additional issues: If the sensor failure is related to exhaust leaks, wiring problems, or catalytic converter concerns, extra labor and parts may be needed.
These factors help explain why two nearby shops can quote different prices for what seems like the same repair.
Typical costs by sensor type and service option
Prices can vary by garage and region, but the figures below reflect common ranges in the United States for 2024–2025, assuming standard parts and labor. Always verify with the shop for a written estimate before work begins.
- Upstream (sensor 1) replacement: Parts typically $50–$120; Labor about 0.5–1.0 hours; Total commonly $120–$260.
- Downstream (sensor 2) replacement: Parts typically $60–$150; Labor about 0.3–0.75 hours; Total commonly $100–$230.
- Both sensors replacement: Parts typically $110–$270; Labor about 1.0–2.0 hours; Total commonly $230–$520.
Note that dealership or specialized shops may charge toward the higher end, especially if OEM parts are used or if there’s extra diagnostic work involved. In some cases, replacing both sensors at once can save on labor time and costs compared with doing them separately.
What to expect during the service
Replacing an oxygen sensor is a routine job for a trained mechanic, but the exact steps can vary based on the car’s condition and access to the sensor. Here’s what typically happens:
- Vehicle is raised and the faulty sensor’s location is identified using the service manual.
- Old sensor is unscrewed; penetrating oil or heat may be used if the sensor is stubborn.
- New sensor is installed with proper torque specifications and, if applicable, anti-seize compound on the threads.
- On some cars, the ECU is reset or readiness monitors are checked after replacement.
- Engine codes are cleared if needed and the car is tested to confirm the repair resolves the issue.
After replacement, the technician will typically road-test the vehicle to ensure the check engine light does not return and that emissions readiness monitors are satisfied.
Summary
For a 2008 Honda Civic, replacing a single oxygen sensor typically costs about $150–$350, and replacing both sensors usually runs $300–$700, depending on parts and labor choices. Prices vary by sensor type (upstream vs downstream), parts (OEM vs aftermarket), and local labor rates. When obtaining quotes, ask for a breakdown of parts, labor, and any diagnostic fees, and confirm whether both sensors are needed. Proper replacement helps restore fuel efficiency and keep emissions within acceptable limits.
How many O2 sensors does a 2008 Honda Civic have?
2 Oxygen O2 Sensor
2 Oxygen O2 Sensor for Honda Civic 2006 2007 2008 09 1.8L Upstream + Downstream.
Is it worth fixing an O2 sensor?
If your oxygen sensor isn't working, your engine burns more fuel than needed. That means you're wasting money at the pump. It can also cause damage to other parts like the catalytic converter, which is a much more expensive repair.
Can I still drive with a bad O2 sensor?
If My Oxygen Sensor Fails, Can I Still Drive My Vehicle? We recommend not driving with a bad O2 sensor as the powertrain isn't running on the correct fuel mixture.
What are the symptoms of a bad O2 sensor on a Honda Civic?
A well-working O2 sensor can be an important component of a consistent running car. Still, a bad O2 sensor can probably lead to bad smells from your car, poor gasoline efficiency, and a below-level running engine.