P2584

Fuel Additive Control Module Requested MIL Illumination

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Deteriorating fuel economy
Possible problems starting the engine
Limiting engine operating modes

Causes

Malfunction of the fuel additive control module
Open or short circuit in module circuits
Problems with module power or grounding
Software error in control module
Mechanical damage to system components

How to Fix

Check fault codes and system operating parameters
Inspect the wiring harness and module connectors
Check power supply and grounding of the module
Test or replace fuel additive control module
If necessary, update the module software

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