99 F150 multiple codes
Thread Starter
|
New User
Joined: Feb 2016
Posts: 1
Likes: 0
99 F150 multiple codes
I have a 99 f150 5.4 triton. It is showing 5 codes and i want to see if anyone might have one solution for all or where should i start.
P0174 system lean bank 2
P0303 missfire cyclinder 3
P0308 missfire cyclinder 8
P0353 ignition coil c circuit malfunction
P0401 EGR system insufficient flow
Thanks
Chris
P0174 system lean bank 2
P0303 missfire cyclinder 3
P0308 missfire cyclinder 8
P0353 ignition coil c circuit malfunction
P0401 EGR system insufficient flow
Thanks
Chris
Senior User
Joined: Oct 2014
Posts: 147
Likes: 0
From: Georgia
Sounds like 2 of your COPs could be bad. try replacing cylinder #3 & #8 COP. If you can go a few days without the vehicle, order them online. If not I suggest BWD brand coils from orileys.
COPs = Coil-on-Plugs
COPs = Coil-on-Plugs
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
Code 303 and 353 are the same cylinder #3.
The 353 indicates the coil is open, the connector is off or the harness is open.
The 308 is cylinder 8 secondary issue causing misfire failure.
The 401 code is a different issue unrelated to the ignition.
The 401 is a diagnostic test failure of the EGR system for flow rate.
It is a low flow test fail.
Could be the ports behind the EGR are plugged with carbon or the DPFE sensor has failed or both..
Good luck.
.
The 353 indicates the coil is open, the connector is off or the harness is open.
The 308 is cylinder 8 secondary issue causing misfire failure.
The 401 code is a different issue unrelated to the ignition.
The 401 is a diagnostic test failure of the EGR system for flow rate.
It is a low flow test fail.
Could be the ports behind the EGR are plugged with carbon or the DPFE sensor has failed or both..
Good luck.
.
Thread
Thread Starter
Forum
Replies
Last Post
Bootlegger's Deluxe
Modular V8 (4.6L, 5.4L)
2
Mar 12, 2016 08:51 PM
