P2584 - OBD II Trouble Code

Our automotive experts have put together the following information about the P2584 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P2584 code.

OBD II Fault Code

• OBD II P2584

OBD-II Code DEF is too low is defined as a Fuel Additive Control Module Requested MIL Illumination

Diesel Exhaust Fluid (DEF) is used to assist in converting leftover exhaust particles to harmless gases. In order to burn off those particles, the temperature of the exhaust system needs to increase. the injection of DEF Fluid into the exhaust stream brings Diesel Particulate Filter (DPF) up to temperature. The system is then able to convert harmful NOx to Nitrogen, Carbon Dioxide, and water. The Reductant Catalyst (SRC) was added to further reduce any NOx was still in the exhaust stream. Code P2584 is stored when the DEF needs to be topped off.

Common Problems That Trigger the P2584 Code

• DEF is too low