What does code P0619 mean?

Q: What does code P0619 mean?

Alternative Fuel Control Module RAM/ROM Error. P0619 indicates that the alternative fuel control module has detected an internal memory failure, either in its random access memory (RAM) or read-only memory (ROM). The module runs a self-test at key-on and stores this code when the memory check does not match the expected values, meaning the module cannot reliably store or retrieve its operating data.

DTC codes / P06xx · Computer and output circuits / P0619

P0619Alternative Fuel Control Module RAM/ROM Error

P0619 indicates that the alternative fuel control module has detected an internal memory failure, either in its random access memory (RAM) or read-only memory (ROM). The module runs a self-test at key-on and stores this code when the memory check does not match the expected values, meaning the module cannot reliably store or retrieve its operating data.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaComputer and output circuits

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.