2018 Honda Accord Forum banner
1 - 11 of 11 Posts

·
Registered
Joined
·
13 Posts
Discussion Starter · #1 ·
I have taken my car to three different dealers a total of four times. None of them can figure out why this happens. All test come back good, codes P0301 P0302 P0303 P0304 sometimes but others it will code nothing. Had fuel injectors and head gasket replaced under warranty as a “see if this does anything” fix. I’m trading this car in, just waiting on my new one to arrive at dealer. Good compression, electrical test and mechanical inspection. Everything is “up to spec”. The engine will only misfire and go into limp mode when engine is cool. A 5 second restart of the car fixes the issue and is back to normal.


2020 Accord LX
1.5L T CVT
21000 miles
Regular maintenance completed

video: New video by Austin Spiller
 

·
Registered
Joined
·
953 Posts
My codes were P0300, P0301, P0302, P0303, P0304.
Again, it's not throwing a code specifically for it they don't know what to do. Those are simply misfire codes for each cylinder, 300 is a code for misfire on multiple cylinder. None of them are specific. So knowing this, refer to my first post..... Why haven't they changed the coils and plugs?
 

·
Registered
Joined
·
13 Posts
Discussion Starter · #10 ·
Again, it's not throwing a code specifically for it they don't know what to do. Those are simply misfire codes for each cylinder, 300 is a code for misfire on multiple cylinder. None of them are specific. So knowing this, refer to my first post..... Why haven't they changed the coils and plugs?
I wish I knew. I even took had it diagnosed, with no firm diagnosis, at two honda dealerships.
 

·
Registered
Joined
·
953 Posts
You need to take the car in and have them keep it demand they change the coils and plugs. Also demand a courtesy vehicle. They need to keep the vehicle until they resolve the issue. If they can't then it's time to get a manager involved and either take your vehicle back and trade you a different one or buy the car back as if it were fine, and you go on your merry way. Or get Honda NA involved. But again, coils and plugs should have been first,.but because there are no codes..... again I'm leaning toward the ecm being faulty. I believe there seems to be a pattern emerging with the 2018's but will see.
 
1 - 11 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top