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The other day my check engine light started flashing when I turned my car on. It just flashes for a few seconds and then goes away. I bought an OBD reader and upon hooking it up it can't read anything wrong. I've reset the ecu by disconnecting the battery and by using the OBD reader as well. What's the best way to check the ecu and OBD reader port in the car?

Also when putting the car in park it makes a weird sound. It also does this when in reverse. Any ideas?

 
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Possible troll? Is this your first car Henry?

 
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No man I'm not trolling. I can change the oil and tires.

 
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Ok, well the blinking engine light is normal. Every Honda I have ever owned flashes it for a few seconds during startup. What sort of sound does the car make when going into park?

 
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Its sort of like a clunking sound. It does it in reverse as well.

 
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Thats normal as well. Nothing to worry about.

 
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Blinking maintenance required light is what I meant to say.

 
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What? That's not normal. It vibrates the whole car. It started off as off and on. Now, its a pretty regular occurrence.

 
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You didnt say it shook the whole car. If the maintenance required light stays off, your fine.

 
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https://www.civicforums.com/forums/3...ml#post4624274

The reset is in your owners manual too.