Service Engine Soon Light On
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Service Engine Soon Light On
I changed my spark plugs yesterday and now the Service Engine Soon Light is on. I got the code read and it came up P0354 Ignition Coil D Primary/Secondary Circuit Malfunction.
Does that mean that the coil is bad or maybe it just isn't making a good connection to the plug or what? Which coil is coil D, does that correspond to cylinder 4???
Does that mean that the coil is bad or maybe it just isn't making a good connection to the plug or what? Which coil is coil D, does that correspond to cylinder 4???
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From: Louisville,Ky.
Welcome to the forum 
Could be a bad connection on a plug wire or wires going to the coil. Not sure which one D is though. Is it running bad?
You can switch coils from side to side and see if the code changes. If so, then it is a coil, if not then it is a plug or wire.
Could be a bad connection on a plug wire or wires going to the coil. Not sure which one D is though. Is it running bad?
You can switch coils from side to side and see if the code changes. If so, then it is a coil, if not then it is a plug or wire.
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Thanks LxMan1
The enginer runs fine.
I found out that coil D does correspond to cylinder #4 which is the furthest one back on the passenger side. I also discovered that I didn't get the bolt holding down the coil all the way down and the coil had popped up. I guess I cross threaded it or something because the bolt won't go all the way down now. That explains the P0354 code.
I think I could get some lock washers and take up the space to keep the coil all the way down. Will disconnecting the battery reset the computer?
I hate to think what the dealership might charge me to get the threads retapped......
The enginer runs fine.
I found out that coil D does correspond to cylinder #4 which is the furthest one back on the passenger side. I also discovered that I didn't get the bolt holding down the coil all the way down and the coil had popped up. I guess I cross threaded it or something because the bolt won't go all the way down now. That explains the P0354 code.
I think I could get some lock washers and take up the space to keep the coil all the way down. Will disconnecting the battery reset the computer?
I hate to think what the dealership might charge me to get the threads retapped......
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I disconnected the battery, and got some washers to make sure the bolt holding the coil got tight. When I started it back up the service engine soon light didn't come back on and never has.
Problem fixed. Thanks for the help.
Problem fixed. Thanks for the help.
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