As Rich says, it's a CIM fault. Part of the whole horn/headlights/dimmer switch/etc problems. I've had this happen twice, apparently people have got a CIM update from Vauxhall (Around ยฃ70) and thats fixed it, but personally I'd check your left hand steering controls work properly at max brightness with the headlights on, and the horn works with headlights on, else, you may get a new CIM due
The point of the engine indicator light on your Honda Accord is to keep you notified of a motor problem, it can be associated with many different concerns, and, dependent on how it turns on itself, will correspond to more or less serious failures. We are going to talk about the 3 types of warns of the engine light of your car.
5rxAutL.