p0171
Moderate
Land Rover · SUVs
System Too Lean (Bank 1)
Quick Answer
Error code P0171 on your Land Rover 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
Scan vehicle with OBD-II diagnostic tool
2
Inspect vacuum hoses for leaks or cracks
3
Check fuel pressure using fuel pressure gauge
4
Clean or replace MAF sensor if needed
5
Clear fault codes and test drive to verify
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
MAF sensor (optional)
Fuel filter (optional)
Fuel pressure gauge
Vacuum hose repair kit (optional)
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