Question about 2004 Honda Accord
Whenever I fill up my gas tank on my 2004 Honda Accord, a few days later the "check engine" light comes on. It stays on for a day or two, then goes off. It never comes on again until the next time I fill up the car.However, the next time I fill up the tank the whole pattern repeats. I called the dealer and they thought the problem was due to a loose gas cap. I was suspicious about that because I was sure I was tightening the gas cap as much as I have ever tightened it. However, I nevertheless did what they said and took off the gas cap, then replaced it again. Sure enough, a few days later the check engine light went off, so I thought they had diagnosed the problem correctly. However, it did not make sense that it would come on again a few days after every fill up. Surely I was tightening it properly on at least some occassions!!! I had a scan of the check engine light run at Autozone, and they said that the check engine code was indicative of a defective oxygen sensor. Can anybody think of any reason why a defective oxygen sensor would result in symptoms like the ones I have described, with the check engine light coming on and going off with a pattern that seems tied to the amount of gas in the tank???
The P0141 code points to the O2 sensor heater circuit. It could be that there is a short in the wiring to the O2 sensor or it could be that the O2 sensor heating element itself is bad. The code is for O2 sensor Bank 1 Sensor 2. Bank 1 means its the O2 sensor connected to the exhaust pipe that runs to cylinder #1. Sensor 2 means that it is likely the O2 sensor after the catalytic converter on the same exhaust pipe.
Posted on Dec 31, 2008
Thats called lazy oxygen sensor replace it.
Posted on Mar 10, 2015
I have a similar problem with my Honda Accord (2006). For the last 5 years my check engine light has come on and gone back off a couple of days later. I have had it checked, it was supposedly the O2 sensor. They replaced it, twice. Still happens, and you know what? It happens a couple of hours after it either rains or I wash the car. Now explain that!!
Posted on Sep 05, 2013
Ckerncrab2 - My car, 2004 Accord LX 4Cyl, has the exact same problem. P0141 - O2 sensor B1S2. If you fixed your could you please post as to how much it costed? I saw online that part costs $75.
Posted on Nov 01, 2009
I would be tempted to have fuel pressure tested & recorded when light not on, and when it does come on. It's a long shot, but if filling the tank is stirring up excessive dirt in tank, and it takes a day or so to settle back at pump screen area, where it causes partial plugging, thus lower fuel pressure, thus, leaner mixture of fuel detected by oxygen sensor. ? If you have a low fuel pressure situation, it can lean out the mixture.
Posted on Dec 31, 2008
I Have a 2001 Toyota Tacoma Pick up truck, 6 cylinder, Everytime i fill up my tank it does the same thing. The first time it did it i changed the fuel filter and the light went out. The second time I changed 1 out of 2 O2 sensors and the light went out. The check engine light came on again yesterday after filling up the tank and I am getting really sick and tired of this so i'm bringing it in to toyota today and getting the problem resolved. The gas we get nowadays sucks. Let you know what the end result is.
Posted on Dec 28, 2009
The gas tank is vented in a controlled manner. If the vent is not working properly, when you remove your gas cap the tank is sucking in a relatively large amount of air all at once then as you use gas creating a vacuum inside the tank. If you leave the cap loose the check engine light should indeed come on after the computer detects a problem for multiple driving cycles, the light then goes out after detecting no problem for several cycles. You could try replacing the gas cap, but I would only give that a 50% chance of solving your problem permanently.
Posted on Dec 31, 2008
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Posted on Jan 02, 2017
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