P2187
Sistema
Powertrain (Fuel/Air)
Scanner richiesto
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.

Sintomi comuni

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

Cause tipiche

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

Quale scanner ti serve?

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

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono spesso uno scanner mult sistema.

Consigli diagnostici

  • Registra il freeze frame quando il codice compare la prima volta
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla i codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare un sensore

Scanner FOXWELL consigliati

Domande frequenti

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.