What does code P2585 mean?

Q: What does code P2585 mean?

Fuel Additive Control Module Warning Lamp Request. P2585 indicates that the fuel additive control module has requested illumination of the malfunction indicator lamp, meaning the module itself has detected an internal fault or a problem within its control circuit. The powertrain control module stores this code after receiving that lamp request over the communication network, flagging a fault in the fuel additive dosing system.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P2585

P2585Fuel Additive Control Module Warning Lamp Request

P2585 indicates that the fuel additive control module has requested illumination of the malfunction indicator lamp, meaning the module itself has detected an internal fault or a problem within its control circuit. The powertrain control module stores this code after receiving that lamp request over the communication network, flagging a fault in the fuel additive dosing system.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

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