p0171
Moderate
Porsche · SUVs
System Too Lean (Bank 1)
Quick Answer
Error code P0171 on your Porsche SUVs means: System Too Lean (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Connect OBD-II scanner and verify the code
2
Inspect and test oxygen sensors with multimeter
3
Check fuel pressure and injector operation
4
Examine air intake system for leaks
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 filter
Air filter
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