What does fault code P2187 mean?

System Too Lean at Idle (Bank 1). BMW vehicle detected a lean mixture condition at idle.

P2187

System Too Lean at Idle (Bank 1)

Q: What are the possible causes of P2187?

DISA valve (intake manifold adjustment valve) failure; Intake manifold gasket leak; Vacuum line leak; Eccentric shaft sensor failure.

Severity: Medium Fuel & Air Metering BMW Specific

Detailed Description

BMW vehicle detected a lean mixture condition at idle.

Possible Causes

DISA valve (intake manifold adjustment valve) failure

Intake manifold gasket leak

Vacuum line leak

Eccentric shaft sensor failure.

Solutions & Repair Guide

BMW-specific troubleshooting: Focus on checking the DISA valve and eccentric shaft sensor; Check intake manifold gasket sealing; Use a smoke test to check for intake leaks.

Disclaimer: The information above is for reference only and does not constitute professional repair advice. Actual causes may vary depending on vehicle make, model, year, and configuration. Always consult a qualified technician for accurate diagnosis.