P2187
Systeem
Powertrain (Fuel/Air)
Scanner vereist
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

System Too Lean at Idle (Bank 1)

Understand P2187, common causes, and the right FOXWELL scanner to diagnose it.

Lean condition specifically at idle — points to vacuum leaks, idle air control issues, or MAF problems more than highway fuel delivery.

Veelvoorkomende symptomen

  • Rough or unstable idle
  • Stalling at stops
  • Often with P0171

Typische oorzaken

  • Vacuum leak at idle
  • Dirty throttle body
  • Idle air control valve stuck
  • PCV system leak

Welke scanner heb je nodig?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen FOXWELL scanners

Veelgestelde vragen

Can I diagnose P2187 with a basic code reader?
P2187 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P2187?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.