2010 Civic dies when accelerating hard

[Stephen Dunham]

Car dies when accelerating hard. If you slowly speed up its fine but anytime you get on the gas hard it dies and check engine light comes on. Usually goes off by next day and sometimes doesnt come on at all. Any advice would be great im at a loss. Thanks

Car has only 83k Miles so i wouldnt htink it would be anything serious!

 

[HeX]

Pull the code for some guidance.

 

[Stephen Dunham]

the code its throwing is Po685

 

[HeX]

Tthrough the magic and wonder of using Google...
www.engine-codes.com/p0685_honda.html

Inspect, and likely change, the ECM Power Relay. Check the wiring too.

 

[Stephen Dunham]

I checked google myself i couldnt find any info on which one the ECM power relay was and only info i could find was if it was a relay or fuse the car wouldnt start at all. the car starts and runs fine as long as i dont get on the gas hard. Think its a loose wire or something loose in the ECM power harness! But i would like some insight on where to start

 

[Stephen Dunham]

Dont see a 2010 civic manual on there and dont have winzip to open the files!

 

[Stephen Dunham]

I checked all the fuses from the list that it could be just wondering which one is the ECM/PCM power relay cant seem to find which relay is that one. All the fuses checked out and im thinking if the ECM power relay was bad I wouldnt think the car would run at all. Am i off on this?