p0171
Moderate
Hyundai · SUVs
System Too Lean (Bank 1)
Quick Answer
Error code P0171 on your Hyundai SUVs means: System Too Lean (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Ioniq 5 Limited 2024Ioniq 5 N 2024Ioniq 5 SE Long Range 2024Ioniq 5 SE Standard Range 2024Ioniq 5 SEL 2024Kona Limited 2024Kona N Line 2024Kona SEL 2024Palisade Calligraphy 2024Palisade Limited 2024Palisade SE 2024Santa Fe Calligraphy 2024Santa Fe Limited 2024Santa Fe SE 2024Santa Fe XRT 2024Tucson Limited 2024Tucson N Line 2024Tucson SE 2024Tucson XRT 2024Ioniq 5 SE 2024Kona SE 2024Kona Electric SE 2024Palisade SEL 2024Santa Cruz SE 2024Santa Fe SEL 2024Santa Fe Hybrid SEL 2024Tucson SEL 2024Tucson Hybrid SEL 2024Venue SE 2024
Likely Causes
How to Fix It
1
Scan vehicle with OBD-II reader to confirm code
2
Check for vacuum leaks around intake manifold and hoses
3
Test fuel pressure at fuel rail using pressure gauge
4
Inspect oxygen sensors and replace if faulty
5
Check fuel injector operation with diagnostic scope
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 gauge
Vacuum sealant
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