p2187
Moderate
Genesis · SUVs
System Too Lean at Idle (Bank 1)
Quick Answer
Error code P2187 on your Genesis SUVs 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
Likely Causes
How to Fix It
1
Check fuel pressure at idle with gauge
2
Inspect oxygen sensor response at idle RPM
3
Perform detailed vacuum leak inspection
4
Check PCV system flow and operation
5
Run fuel injector cleaning cycle
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
Fuel pressure regulator
Oxygen sensor
Fuel system cleaner
Vacuum hose kit
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