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F150online Forums
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List of trouble codes for the 4.2L V6
(
1
2
3
)
Peacemaker
on Oct 22, 2006
Dec 29, 2012
07:28 PM
by
BlueOvalFitter
35
83,800
Sticky
MERGED: DTC List
i.ride.suzuki
on Dec 6, 2007
Nov 17, 2008
11:19 AM
by
Rockpick
4
26,435
Normal Threads
222,000
grizzeyes
on May 1, 2026
May 1, 2026
03:06 AM
by
grizzeyes
0
224
2013 F150 V6 3.7L crank- no start
XSleeper
on Jan 3, 2026
Jan 16, 2026
08:27 PM
by
XSleeper
3
484
2013 F150 V6 overheating
XSleeper
on Jun 4, 2023
Jan 3, 2026
11:52 PM
by
XSleeper
7
1,614
Any experience with turbo coolant lines on 2017+ 3.5 Eco?
sdekold
on Dec 1, 2025
Dec 1, 2025
01:07 PM
by
sdekold
0
425
trouble removing harmonic balancer
spknvlky8
on Jan 15, 2018
Nov 6, 2025
08:00 AM
by
endonover11
14
6,982
Service advance trac
grizzeyes
on Oct 6, 2025
Oct 21, 2025
07:19 AM
by
stoffer
5
576
What is the first thing to do for rough idle on the 3.5?
thompsdw2
on Mar 28, 2025
Oct 13, 2025
05:50 PM
by
offlineme
1
811
PO12D code showing on my 2013 4.5 ecoboost
Screamer2
on Jan 21, 2023
Aug 14, 2025
08:28 AM
by
savemalygin
3
5,337
3.5 Ecoboost, CEL and misfire
KDOTengineer
on Mar 18, 2024
Apr 6, 2025
04:33 PM
by
psychfevri
4
1,857
oil leaks
jconnell
on Feb 28, 2025
Feb 28, 2025
07:41 PM
by
jconnell
0
592
Alternator Burst Into Flames
sweet34
on Feb 23, 2019
Feb 28, 2025
07:34 PM
by
jconnell
8
1,965
Highest mileage Ecoboost?
glc
on Jun 22, 2022
Dec 9, 2024
06:16 PM
by
Radars
5
2,701
Misfire Mystery
UT Ford Fan
on Oct 29, 2024
Oct 29, 2024
05:38 PM
by
UT Ford Fan
0
823
My 2020 F150 3.5L EB TT
Elvis121
on Oct 25, 2024
Oct 25, 2024
10:37 PM
by
glc
1
592
3.5 EcoBoost Shudder and hesitation
F150PlatinumWY
on Aug 17, 2018
Oct 20, 2024
03:56 PM
by
WCS61
6
18,807
4.2 nay sayers
(
1
2
3
4
5
)
Marc Carpenter
on May 29, 2012
Oct 15, 2024
10:16 AM
by
glc
67
58,740
P0171/p0174
nate620
on Apr 10, 2005
Sep 25, 2024
09:31 PM
by
glc
4
1,422
2006 F-150 4.2L performance & Gas Mileage?
06_FirstTimeF-150
on Jun 1, 2023
Sep 22, 2024
01:28 AM
by
Fifty150
6
3,241
Towing
Chiingy thao
on Jun 25, 2024
Sep 22, 2024
01:18 AM
by
Fifty150
8
902
Rodent(s) ate some wires on my 2000 F150 4.2L!
russellkl1
on Sep 2, 2024
Sep 4, 2024
08:04 PM
by
russellkl1
4
740
2018 EcoBoost 3.5L Fuel Injector PFI and DI Question
dj10024
on Jul 12, 2024
Jul 15, 2024
09:25 PM
by
dj10024
2
3,902
Remove/install harmonic balancer 4.2
Dgauss
on Apr 15, 2016
Jul 6, 2024
02:56 PM
by
Fordtech12
1
3,930
firing order for 4.2
scrocker
on Mar 9, 2002
Jun 13, 2024
12:25 AM
by
Fifty150
8
61,083
EB coolent leak into cylinders
kepcv6871
on Jun 6, 2024
Jun 6, 2024
11:55 AM
by
kepcv6871
0
713
Fuel pump issues
elfshadowreaper
on Oct 23, 2012
Apr 5, 2024
07:58 PM
by
XSleeper
7
3,302
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