What does OBD2 code P0174 mean?+
P0174 stands for System Too Lean Bank 2. Bank 2 is running lean. On V6/V8 engines this often indicates a vacuum leak on the Bank 2 side of the intake.
What causes code P0174?+
Vacuum leak on Bank 2 side of intake; Clogged injectors Bank 2; O2 sensor fault; Low fuel pressure
How do I fix code P0174?+
Smoke test Bank 2 intake manifold gasket; Clean or replace Bank 2 injectors; Test Bank 2 O2 sensor; Check fuel pressure at rail
How much does it cost to fix P0174?+
Estimated repair cost for P0174 is $50–$500.
Is P0174 DIY-friendly?+
Yes — P0174 is generally DIY-friendly with basic tools.