Oxygen Sensor replaced, Check Engine Light still on.
12-03-2005, 06:13 PM
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Oxygen Sensor replaced, Check Engine Light still on.
My check engine light came on on my 2003 Honda Accord LX 4 cyl. a couple months ago. I took the car to Autozone and they said the oxygen sensor was showing as faulty on the reader. I bought a new sensor -- but wasn't in a hurry to put it on -- gas mileage on the highway is still between 35 and 36 mpg.
Today I replaced the oxygen sensor. I then disconnected both sides of the battery -- left them off a few seconds and reconnected them.
The check engine light went off. The next time I restarted the car the check engine light came back on.
Any thoughts? I sure would like to be able to fix this myself.
Today I replaced the oxygen sensor. I then disconnected both sides of the battery -- left them off a few seconds and reconnected them.
The check engine light went off. The next time I restarted the car the check engine light came back on.
Any thoughts? I sure would like to be able to fix this myself.
12-03-2005, 06:45 PM
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go back to autozone and have them reset the codes... or see if any others are comming up.
An 03 needed an O2 sensor already? how many miles on the car? it still under warranty?
An 03 needed an O2 sensor already? how many miles on the car? it still under warranty?
12-04-2005, 05:24 PM
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"I then disconnected both sides of the battery -- left them off a few seconds and reconnected them."
This method doesn't work on OBD2 equipped vehicles. You need to pull the 7.5 amp clock fuse located on the drivers side fuse panel for at least 1 minute. This will reset the computer.
Which O2 sensor did you replace, up stream or down stream? With that kind of gas mileage, I'm thinking the issue is with the down stream (cat) O2. Make sure the connections to it are good. 46,000 miles is way too early to be getting a code from either sensor.
This method doesn't work on OBD2 equipped vehicles. You need to pull the 7.5 amp clock fuse located on the drivers side fuse panel for at least 1 minute. This will reset the computer.
Which O2 sensor did you replace, up stream or down stream? With that kind of gas mileage, I'm thinking the issue is with the down stream (cat) O2. Make sure the connections to it are good. 46,000 miles is way too early to be getting a code from either sensor.
12-04-2005, 08:46 PM
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yea, make sure you changed the right sensor.. the code will tell you which sensor it is (primary [front] or secondary [rear]) and what the problem with it is.
Have the car checked again (hey, its free) and see what you turn up... then let us know what you find out.
Have the car checked again (hey, its free) and see what you turn up... then let us know what you find out.
