AutoCodes – Audi – P2585 Audi

P2585 Audi Code - Fuel Additive Control Module Warning Lamp Request

Quick Answer

The main purpose of the Fuel Additive Control Module is to calculate the required amount of fuel additive and control the time of injection into the fuel tank. Common causes include Top Off Fuel Additive Tank, Faulty Fuel Additive Sensor, Faulty Fuel Additive Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2585 Audi indicates Fuel Additive Control Module Warning Lamp Request.
Common causes: Common causes include Top Off Fuel Additive Tank, Faulty Fuel Additive Sensor, Faulty Fuel Additive Control Module.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,563

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2585 Audi Description

The main purpose of the Fuel Additive Control Module is to calculate the required amount of fuel additive and control the time of injection into the fuel tank. It also stores Diagnostic Trouble Codes (DTC) for the fuel additive system. In addition to the already 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 the Powertrain Control Module (PCM) warning indicator if there are concerns with the additive system or if the fuel additive tank requires refilling. The PCM will set the OBDII code when Fuel Additive Control Module request the warning to illuminate.

OBDII Code P2585 Audi - Fuel Additive Control Module Warning Lamp Request - AutoCodes.com — P2585 Audi Code - Fuel Additive Control Module Warning Lamp Request

What does this mean?

What are the Possible Causes of the DTC P2585 Audi?

Top Off Fuel Additive Tank
Faulty Fuel Additive Sensor
Faulty Fuel Additive Control Module
Fuel Additive Control Module harness is open or shorted
Fuel Additive Control Module circuit poor electrical connection

How to Fix the DTC P2585 Audi?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2585 Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2585 Audi Code

1. What does the OBDII code P2585 for Audi mean?

The code P2585 indicates a malfunction in the Fuel Additive Control Module Warning Lamp Request system in an Audi vehicle.

2. What are the common symptoms of a P2585 fault in an Audi?

Common symptoms of a P2585 fault may include the illumination of the warning lamp on the dashboard indicating an issue with the fuel additive control module.

3. What are the possible causes of the P2585 code in an Audi?

Possible causes of the P2585 code in an Audi can include a faulty fuel additive control module, a wiring issue, a defective warning lamp, or a communication error within the system.

4. How serious is a P2585 fault in an Audi?

While a P2585 fault may not cause immediate drivability issues, it is important to address the underlying problem promptly to prevent potential long-term damage to the vehicle's emissions control system.

5. Can I continue driving my Audi with a P2585 fault?

It is generally not recommended to drive your Audi with a P2585 fault, as unresolved issues with the fuel additive control module can lead to decreased fuel efficiency and potentially cause more severe problems over time.

6. How can I diagnose a P2585 fault in my Audi?

Diagnosing a P2585 fault typically involves using an OBDII scanner to retrieve the specific fault code, followed by a visual inspection of the fuel additive control module, wiring, and warning lamp components.

7. How can I repair a P2585 fault in my Audi?

Repairing a P2585 fault may involve replacing the fuel additive control module, repairing any damaged wiring, or addressing any issues with the warning lamp as indicated by the diagnostic process.

8. Can I reset the P2585 code in my Audi without fixing the underlying issue?

While you can clear the fault code using an OBDII scanner, it is recommended to address the root cause of the P2585 fault to prevent the code from reappearing and ensure the proper functioning of the fuel additive control system.

9. Is it possible to prevent a P2585 fault in my Audi?

Regular maintenance and timely inspection of the fuel additive control system, including the module, wiring, and warning lamp, can help prevent issues that may trigger the P2585 fault code in your Audi.

10. Should I seek professional help for a P2585 fault in my Audi?

If you are not experienced in diagnosing and repairing automotive electrical systems, it is advisable to seek assistance from a qualified mechanic or Audi dealership to properly address and resolve a P2585 fault in your vehicle.