It could mean a few things. There's a voltage range in which that light stays off, which seems to be between 11.5v and 14.5v. The light comes on when you're either above or below that range. Start by checking the alternator fuse. If that's good, and it almost always is, do a voltage test. Too low and the alternator is probably bad; too high and the voltage regulator went out. (Which is basically the same thing, since the VR is inside the alternator case.) Check to see if alternator is charging battery. With volt meter connect to battery and vehicle not running check voltage - start vehicle and observe volt meter should be around 14.2 volts - if no different running or not or if lower with vehicle running alternator is not charging battery and should be replaced. If alternator functioning properly it is probably just the "trigger" wire on alternator.
removing negative battery ca ble
Dead cell in the battery requiring it be replaced or something is on pulling power from the battery. Some light or relay.
there is usually a fuse box next to the battery under the bonnet
The light is on because the alternator is not putting out the required voltage. Either the belt is broken, loose, or the alternator is defective.
I have a 1990 Honda accord ex and my check engine light the car goes form a high rev to a low rev when I first turn on the car. Is this a vacume line problem or a voltage problem?
The easiest way is to disconnect the battery for 15-30 minutes.
there are many light bulbs on the Honda accord.. what light bulb?
No, you must reset it with an OBD2 scan tool.
Try disconnecting the battery for about 10 minutes or have vehicle scanned and codes cleared
Honda
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how do i read srs light blink on honda accord 2005?