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p2187
Moderate
SEAT · SUVs & Crossovers
System Too Lean at Idle (Bank 1)
Quick Answer
Error code P2187 on your SEAT SUVs & Crossovers means: System Too Lean at Idle (Bank 1). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
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Likely Causes
  1. Small vacuum leak detectable primarily at idle
  2. Faulty PCV valve or crankcase ventilation system leak
  3. Dirty or failing fuel injectors not atomizing properly at low flow
  4. Intake manifold gasket leak
  5. Faulty fuel pressure regulator not maintaining idle pressure
How to Fix It
1
Perform a thorough smoke test of the intake and crankcase ventilation system
2
Check idle fuel injector operation and spray pattern
3
Inspect the PCV valve and crankcase ventilation system for leaks
4
Test fuel pressure at idle and verify fuel pressure regulator operation
5
Check the intake manifold gasket 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
PCV valve
Fuel injectors
Fuel pressure regulator
Intake manifold gasket
Vacuum hoses
Related Error Codes
P0171P0300P0420P0411P0441
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