p2187
Moderate
Fiat · Cars
System Too Lean (Bank 1, Off-Idle)
Quick Answer
Error code P2187 on your Fiat Cars means: System Too Lean (Bank 1, Off-Idle). This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Test fuel pressure under load
2
Inspect and test oxygen sensor
3
Check mass airflow sensor for contamination
4
Look for vacuum leaks
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 injector cleaner
Air filter
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