P3405
Systeem
Powertrain (Engine)
Scanner vereist
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Cylinder 5 Deactivation System Performance

Understand P3405, common causes, and the right FOXWELL scanner to diagnose it.

Active Fuel Management (AFM/DOD) system cannot deactivate or reactivate cylinder 5 as commanded — common on GM V6/V8 with cylinder deactivation.

Veelvoorkomende symptomen

  • Ticking or misfire on affected cylinder
  • P0305 may accompany
  • Rough idle
  • Check engine light
  • Reduced fuel economy benefit lost

Typische oorzaken

  • Failed AFM lifter on cylinder 5
  • Low oil pressure to AFM solenoids
  • Wrong oil viscosity or low oil level
  • AFM solenoid oil passage blockage
  • Collapsed AFM lifter on cylinder 5

Welke scanner heb je nodig?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

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 P3405 with a basic code reader?
P3405 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 P3405?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.