p2187
Moderate
Citroen · Sedans & Hatchbacks
System Too Lean (Bank 2, off-idle condition)
Quick Answer
Error code P2187 on your Citroen Sedans & Hatchbacks means: System Too Lean (Bank 2, off-idle condition). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Scan for additional lean running codes
2
Test oxygen sensors on both banks
3
Check fuel pressure during acceleration
4
Inspect vacuum hoses after throttle
5
Test fuel injector resistance values
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 injector
Fuel pressure regulator
Vacuum hose
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