When Car is Turned off Radiator Fan Stays ON!! - Drive Accord Honda Forums
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post #1 of 36 Old 09-07-2009, 04:23 PM Thread Starter
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When Car is Turned off Radiator Fan Stays ON!!

Recently I was getting codes p0141 and p2254 which were related to my o2 sensor needing to be changed. I changed it this past week then noticed that when my car is turned off the radiator fan on the drivers side stays on for awhile. I even tried turning the car on and off again but the fan stays on. When I went to get the codes checked it shows p2631 now. Even if I erase the code or unplug battery for 15 min the code immediately in 3 seconds comes back up. Code is for the oxygen sensor saying current trim circuit high. Anybody encounter this problem or know what to do?
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post #2 of 36 Old 09-07-2009, 04:30 PM
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No experience with that one. By the way, did the US Post Office ever find the lost mail containing your DVD-ROM drive? Did you ever get the Navigation System working properly?
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post #3 of 36 Old 09-07-2009, 06:56 PM
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i have a 2007 and sometimes i experienced similiar problems. I was told that it helps cooling down the engine faster(if the engine is hotter than normal). I dont know I could be wrong.
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post #4 of 36 Old 09-07-2009, 07:13 PM Thread Starter
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Well the thing is even if the car is only turned on for 2 min it does that. Plus the heat wave is over so I dont know why it does it.
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post #5 of 36 Old 09-07-2009, 07:56 PM
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My 92 Accord did that all the time (fan would run after the engine was shut off). My 03 Accord has never done it. When the fans on the 92 Accords would keep running (never stop) the fan timer was the usual suspect. I don't know if these new Accords work the same way though. My guess would be either a timer, or coolant temperature sensor is causing it.
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post #6 of 36 Old 09-09-2009, 06:14 AM
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I used to see that happen on older Hondas. I thought it was normal back then. I was driving my Mom's 97 this past weekend and it happened.

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post #7 of 36 Old 09-09-2009, 06:20 AM
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The 96 Accord we used to have did that. I didn't think newer Hondas still did that.


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post #8 of 36 Old 09-09-2009, 07:11 AM
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my 91 accord did that all the time..lol

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post #9 of 36 Old 09-09-2009, 10:45 AM Thread Starter
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well big thing is fan stays on HIGH round the radiator. Also it stays on for while now and I think my battery is gonna die soon.
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post #10 of 36 Old 09-09-2009, 04:37 PM
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Quote:
Originally Posted by darula8 View Post
Recently I was getting codes p0141 and p2254 which were related to my o2 sensor needing to be changed. I changed it this past week then noticed that when my car is turned off the radiator fan on the drivers side stays on for awhile. I even tried turning the car on and off again but the fan stays on. When I went to get the codes checked it shows p2631 now. Even if I erase the code or unplug battery for 15 min the code immediately in 3 seconds comes back up. Code is for the oxygen sensor saying current trim circuit high. Anybody encounter this problem or know what to do?
Maybe Mr. obvious here but if you have the a/c button on and turn the key all the way on without the motor running the fans on mine continue to run until I push the a/c off.

Are you saying that with the key in your hand (key not in the ignition) that it still runs?

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post #11 of 36 Old 09-09-2009, 05:18 PM Thread Starter
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Key is in my hand and I fully lock my car and leave i and it remains loud. It is not hot so I have not even been using ac or fan. Also I believe for the 2631 code I need to place a fuse in the connecting hub for the O2 sensor to eliminate that code. I dont think itll solve the fan problem but ill try. Fan Problem gotta figure it out asap b4 battery dies.
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post #12 of 36 Old 09-09-2009, 06:13 PM
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Key is in my hand and I fully lock my car and leave i and it remains loud. It is not hot so I have not even been using ac or fan. Also I believe for the 2631 code I need to place a fuse in the connecting hub for the O2 sensor to eliminate that code. I dont think itll solve the fan problem but ill try. Fan Problem gotta figure it out asap b4 battery dies.
Most likely an electrical problem then related to the O2 sensor (maybe even a bad new one?). If you just unplugged and plugged the new one in I cannot imagine what happened. Did you disconnect the battery before changing it out? If you cannot find anything on a search here then it is probably not a common issue. It would probably be worth a trip to the dealer or local shop. I would think about any shop could diagnose it.

How about some info on your car on your sig?

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post #13 of 36 Old 09-11-2009, 07:11 PM Thread Starter
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fixed o2 sensor issue but still havin fan problem. Now both fans stay on and they dont turn off period. I disconnected my battery for an hour and whhen I plugged it back on both fans started up immediately. I disconnected the sensor to the left(if your looking at the front of the car) of the radiator and they stayed on. Only thing I do now is disconnect wire on the left fan to turn em off.
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post #14 of 36 Old 09-11-2009, 07:27 PM
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doesn't it have a sensor??? maybe the sensor is acting up
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post #15 of 36 Old 09-12-2009, 06:02 PM Thread Starter
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ok I changed relays in the fusebox under the hood and changed temp sensor switch on the engine block that controls the fan and still have a problem. I do not know what the hell to do now guys.
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