What is pcm code P-0174?
Thread Starter
Team Owner
Joined: Apr 2001
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From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
What is pcm code P-0174?
I have had 100 trouble free miles on my 02 Z06 since putting on the vararam and the car is running great, and all of a sudden it just threw a check engine light with a pcm code of P0174. Is this a lean code? Can you code experts please let me know what code this is for and is it something to concerned about or not?
THANKS!!!
THANKS!!!
Team Owner
Joined: Apr 2001
Posts: 54,204
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From: S.W. Ohio. . . . . . NRA Life Member
P0174 Fuel Trim System Lean bank 2-B
look to see if the airbridge (or anything in the intake system) has spread apart and is letting air in - where it shouldn't be.
And from others (using the search function):
Also, look for leaks between the MAF and throttle body.
the manual says if DTC P0174 is set along with DTC P0171 you should inspect the following:
vacuum hoses for splits, kinks and proper connections.
crankcase ventilation valve and/or system for leaks.
contaminated fuel.
pcm and sensor grounds are clean, tight and in the proper locations.
air induction system after maf sensor for vacuum leaks.
engine mechanical failure.
.
look to see if the airbridge (or anything in the intake system) has spread apart and is letting air in - where it shouldn't be.
And from others (using the search function):
Also, look for leaks between the MAF and throttle body.
the manual says if DTC P0174 is set along with DTC P0171 you should inspect the following:
vacuum hoses for splits, kinks and proper connections.
crankcase ventilation valve and/or system for leaks.
contaminated fuel.
pcm and sensor grounds are clean, tight and in the proper locations.
air induction system after maf sensor for vacuum leaks.
engine mechanical failure.
.
Last edited by Mike Mercury; Feb 12, 2005 at 07:18 PM.
