Dtc p0257

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#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
 
Joined
Nov 14, 2006
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Nothern California
#2
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
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Mar 12, 2007
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#3
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...