P2585 Possible Causes
- Fuel additive tank
- Faulty fuel additive sensor
- Faulty fuel additive control module
- Fuel additive control module harness is open or shorted
- Poor electrical connection in fuel additive control module circuit
How to Fix Code P2585
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P2585 Meaning
The main purpose of the fuel additive control module is to calculate the required amount of fuel additive and control the injection timing into the fuel tank. It also stores diagnostic trouble codes (DTCs) for the fuel additive system. In addition to the previously mentioned operation of the fuel additive system module, the instrument cluster will receive a command from the fuel additive system module to illuminate the malfunction indicator lamp (MIL) or powertrain control module (PCM) warning indicator if there is a problem with the additive system or if the fuel additive tank requires refilling. The PCM will set the OBDII code when the fuel additive control module requests the warning light to turn on.