p0171
Moderate
Dacia · SUVs & Cars
System Too Lean
Quick Answer
Error code P0171 on your Dacia SUVs & Cars means: System Too Lean. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Read the diagnostic trouble codes using OBD-II scanner
2
Inspect oxygen sensors for proper function and resistance values
3
Check fuel pressure at the fuel rail
4
Perform visual inspection of vacuum hoses and connections
5
Test fuel injector spray pattern and flow rates
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 injectors
Vacuum hose kit
Fuel pressure gauge
OBD-II diagnostic scanner
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