P2187 is rated as medium severity. Schedule service — affects performance or emissions.

P2187

System Too Lean at Idle (Bank 1)

Q: What does code P2187 mean?

System Too Lean at Idle (Bank 1): The engine is running lean specifically at idle on bank 1, indicating a vacuum leak near the throttle body or intake manifold.

Powertrain Code · Medium

What does P2187 mean?

The engine is running lean specifically at idle on bank 1, indicating a vacuum leak near the throttle body or intake manifold.

System: Fuel System

P2187 is a powertrain diagnostic trouble code indicating system too lean at idle (bank 1). This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.