P2187
System
Powertrain (Fuel/Air)
Scanner som krävs
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.

Vanliga symptom

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

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade FOXWELL-scannrar

Vanliga frågor

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.