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Help!

maverickmagill

New Member
Feb 17, 2021
2
0
Truck Year
2015
Wondering if anyone else has had this problem to help me narrow it down
I’ve got a P0402 code for egr excessive overflow valve A
Also have abs traction control and trailer brake and electronic throttle control light on
I put a new MAF sensor in changed the bad wheel speed sensor cleaned the MAP sensor egr tube and throttle body out
Still the same nothing changed.. maybe pcm is going out? I have no idea and none of the shops around me know anything about ecodiesels either I had them scan it and they had no clue what to do they said they didn’t want to work on it because they didn’t want to just throw a bunch of parts at it and still not fix it. Any help is appreciated thanks
 

maverickmagill

New Member
Feb 17, 2021
2
0
Truck Year
2015
Thanks I will test the battery when I get home I hadn’t thought of anything like that
 

Tremper126

Moderator
Staff member
Feb 15, 2019
908
331
Truck Year
2014
These newer trucks can get really stupid when the battery gets weak lol
 
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