depending on what engine maker it is , likely an intake manifold or vacuum leak, ck that first
2000 ford lightning. P1540,po171.po174
Trouble code P0174 means:System too lean (bank 2)
1199 jag xj8 mas airflow sensor
PO171 = system adaptive fuel too lean (bank 1) PO174 = system adaptive fuel too lean (bank 2)
How fix code P1140
Here is a video on how to fix engine code p0449
how fix Code P1140 fuel air
The P0174 code on a Cadillac Escalade indicates a lean condition in the engine, meaning there's too much air or not enough fuel. To fix this, you should first check for vacuum leaks in hoses and intake gaskets, as well as inspect the mass airflow (MAF) sensor for dirt or damage. Additionally, examine the fuel system, including the fuel filter and fuel pump, to ensure proper fuel delivery. If necessary, clear the code after repairs and test drive to see if it reoccurs.
P0174 - system to lean, bank 2. You may simply have a vacuum leak affecting bank 2. Check under the hood for disconnected vacuum line(s) on engine.
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how can i fix the code po441 for toyta Camry 1998
this code came up what is it how do i correct or fix 98 cobra