p2187
Moderate
Porsche · Sedans & Sports Cars
System Too Lean at Idle Bank 1
Quick Answer
Error code P2187 on your Porsche Sedans & Sports Cars 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
Monitor short-term and long-term fuel trim at idle with a scan tool
2
Perform a smoke test on intake system
3
Check fuel pressure at idle and under load
4
Inspect and clean bank 1 fuel injectors
5
Clean or replace MAF sensor
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 injectors
MAF sensor
Vacuum hoses
Fuel filter and pressure regulator
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