p0174
Moderate
Porsche · SUVs
System Too Lean (Bank 2)
Quick Answer
Error code P0174 on your Porsche SUVs means: System Too Lean (Bank 2). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Scan vehicle for diagnostic codes
2
Test oxygen sensor on bank 2
3
Check fuel pressure regulator
4
Inspect vacuum hoses for cracks
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Oxygen sensor
Fuel pressure regulator
Vacuum hoses
Related Error Codes