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P026C again

GearHead

GearHead

Active Member
Sep 13, 2016
388
137
Truck Year
2014
jthunts said:
I was getting this code right after I had the HPFP recall done as well. Could not find a definite answer in what it was, but since it comes up as "Fuel Quantity Lower than Expected", I took a guess and replaced the upstream O2 sensor (P/N 68171190AC). Code hasn't come back since.
Click to expand...
I am surprised at your resolution. When I received this code my system diagnostic algorithm ended up with the fuel tank lift pump not supplying sufficient volume. When I experience this code again I will have to look into the O2 readings.
 
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