Why can I not get my check engine light to turn off?
What is your question?
The check engine light on our 2004 Honda Civic LX came it was throwing the code for the downstream O2 sensor. We replaced it and the light went off. A week later the check engine light came back on throwing the code for the upstream O2 sensor. We replaced it the light went off but the next day came back on. It was still throwing the code for the upstream O2 sensor. Thought the sensor was bad replaced it with another new one same type. Did a hard reset check engine light came back on. Was told to drive it 350 miles did that. Got the gas mileage of a pick up truck. Thought that it might be the brand went and got the expensive one. Still the check engine light is on. what do we need to do? Thanks
What makes this problem better or worse?
We thought changing the sensor would fix it
How long has your 2004 Honda Civic had this problem?
RepairPal Certified shops can diagnose and repair your 2004 Honda Civic. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, no "codes" set will ever tell you to replace a specific part. What's happening here is that the source of the trouble code is caused by something other than a failed oxygen sensor. That's why testing is essential before throwing a bunch of wasted money at a vehicle in futility.
I would suggest having a trained technician spend some time with your vehicle and find out what's going on - and how to repair it. There are no guesses online - because hands on assessment and seeing what data is being transmitted using a diagnostic tool capable of monitoring component functionality is needed.
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