p2187
Moderate
Peugeot · SUVs
System Too Lean (Bank 1, Idle)
Quick Answer
Error code P2187 on your Peugeot SUVs means: System Too Lean (Bank 1, Idle). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Check fuel pressure at idle
2
Inspect vacuum system for leaks
3
Test oxygen sensor heating circuit
4
Check fuel filter for restrictions
5
Clean or replace fuel injectors
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 filter
Fuel injector
Vacuum hoses
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