What does code P0618 mean?

Q: What does code P0618 mean?

Alternative Fuel Control Module KAM Error. P0618 means the alternative fuel control module has detected an error in its keep-alive memory, the small battery-backed memory area where it stores learned fuel trim values and adaptive strategies. The module's self-test found that the data in that memory is corrupted or that the memory cannot be written reliably, so the module can no longer trust its stored adaptations.

DTC codes / P06xx · Computer and output circuits / P0618

P0618Alternative Fuel Control Module KAM Error

P0618 means the alternative fuel control module has detected an error in its keep-alive memory, the small battery-backed memory area where it stores learned fuel trim values and adaptive strategies. The module's self-test found that the data in that memory is corrupted or that the memory cannot be written reliably, so the module can no longer trust its stored adaptations.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

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.