P2187
System Too Lean at Idle Bank 1
P2187 is an OBD-II diagnostic trouble code meaning: System Too Lean at Idle Bank 1. Common causes: air leak in intake manifold, malfunction of the mass air flow sensor (maf). Estimated repair cost: $17–89.
Symptoms
- Unstable engine idling
- Dips when pressing the gas pedal
- Increased fuel consumption
- Loss of engine power
- Check Engine Light Is On
Causes
- Air leak in intake manifold
- Malfunction of the mass air flow sensor (MAF)
- Dirty or faulty fuel injectors
- Problems with the fuel pump or pressure regulator
- EVAP system leaking
How to Fix
- Check the intake tract for air leaks
- Diagnose mass air flow sensor and oxygen sensors
- Check fuel pressure and condition of injectors
- Inspect the EVAP system for leaks
- If necessary, replace faulty components
Related codes
Error P2187 by Vehicle Brand
FAQ
What does the P2187 code mean?
P2187 is an OBD-II diagnostic trouble code that indicates: System Too Lean at Idle Bank 1
What causes a P2187 error code?
The most common causes of P2187 include: Air leak in intake manifold; Malfunction of the mass air flow sensor (MAF); Dirty or faulty fuel injectors; Problems with the fuel pump or pressure regulator.
How do I fix a P2187 diagnostic trouble code?
To fix P2187: Check the intake tract for air leaks. Diagnose mass air flow sensor and oxygen sensors. Check fuel pressure and condition of injectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2187?
Yes, but get it checked soon
How much does it cost to fix P2187?
The estimated repair cost for P2187 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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