Dtc p0257

haskell72

Newbie
Joined
Feb 25, 2019
Messages
2
Points
1
Make
Chevrolet
Model
Malibu
Year
2016
Miles
41000
Engine
2.4
Dtc P0257d sets again in a few days after clearing. Had fuel system cleaned about a month ago
 

JackC

wrench
Joined
Nov 14, 2006
Messages
1,728
Points
48
Location
Nothern California
It can take several days for the ECU to go through the "drive cycle" before it will set the code. In other words, the computer will not tell you the codes until AFTER you go through the drive cycle. So, I am suggesting that the problem is there all the time and it is just not being reported for several days. So now you need to determine why the code is setting.
 

billr

wrench
Staff member
Joined
Mar 12, 2007
Messages
7,172
Points
63
So, which is it; P0257 or P0257d? I only find P0257 on our trouble codes site, and that looks like it is for a diesel...
 
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