p0171
Moderate
Skoda · Sedans & Hatchbacks
System Too Lean (Bank 1)
Quick Answer
Error code P0171 on your Skoda Sedans & Hatchbacks means: System Too Lean (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Connect OBD-II scanner and retrieve freeze frame data
2
Inspect oxygen sensor connectors for corrosion
3
Perform fuel pressure test using pressure gauge
4
Check for vacuum leaks using smoke test
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
OBD-II scanner
Oxygen sensor (if faulty)
Fuel pressure gauge
Smoke machine for leak detection
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