P0619 OBD II Trouble Code Alternative Fuel Control Module RAM/ROM Error

How to easily diagnose, repair, and info on causes of a P0619 trouble code that indicates a detected random access / read only memory of the alternative fuel control module.

Symptoms of P0619 OBD II Trouble Code

  • Engine drivability issues
  • Engine stall when idling
  • Delayed engine cranking (especially when cold)
  • Other stored codes

Common Causes of P0619 OBD II Trouble Code

  • Faulty AFCM/PCM
  • AFCM/PCM programming error
  • Open or shorted circuit or connectors in the CAN harness
  • Failed AFCM/PCM power source
  • Insufficient control module ground

Severity of P0619 OBD II Trouble Code

Internal control module codes must always be taken seriously. A stored code P0619 could result in a variety of drivability concerns as valuable controller memory may be lost.