← Back to list

2002 Infiniti I35 P0174 Fault: Variable Idle with Vacuum Leak Suspected

Model: 2002 Infiniti I35 Fault Code: P0174 Posted: 2018-01-16 18:02

I consistently receive fault code P0174 (Bank 2) when scanning my 2002 Infiniti I35. While I have not identified a visible vacuum leak, the symptom is intermittent rough idle—sometimes smooth, other times exhibiting low-end hesitation. The issue appears to be variable, with normal idling at times and sudden roughness during idle conditions.

Related fault codes

P0174

Comments (3)

Anonymous 2018-01-16 19:57

Could you please share the freeze frame data associated with P0174? Is the code triggered specifically at idle or under higher RPMs?

Anonymous 2018-01-19 08:37

I notice that my vehicle shows no diagnostic codes at 2000 RPM, but P0174 appears only when idling.

Anonymous 2018-01-19 08:55

P0174 is commonly linked to vacuum leaks in the intake system. Please share your fuel trim readings at idle and at 3000 RPM for further analysis.