AutoCodes – Ford – P0604 2011 Ford Fusion

P0604 2011 Ford Fusion Code - Internal Control Module Random Access Memory Error

Quick Answer

The Diagnostic Trouble Code (DTC) indicates the Powertrain Control Module (PCM) has experienced an internal memory fault. Common causes include Loose or poor battery terminal connection, Low battery charge, Powertrain Control Module (PCM) Programming. 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
P0604 2011 Ford Fusion indicates Internal Control Module Random Access Memory Error.
Common causes
Common causes include Loose or poor battery terminal connection, Low battery charge, Powertrain Control Module (PCM) Programming.
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 2,368
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 21, 2020
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Code P0604 2011 Ford Fusion Description

The Diagnostic Trouble Code (DTC) indicates the Powertrain Control Module (PCM) has experienced an internal memory fault. The PCM Random Access Memory (RAM) has been corrupted.
OBDII Code P0604 2011 Ford Fusion - Internal Control Module Random Access Memory Error - AutoCodes.com
P0604 2011 Ford Fusion Code - Internal Control Module Random Access Memory Error

What are the Possible Causes of the DTC P0604 2011 Ford Fusion?

  • Loose or poor battery terminal connection
  • Low battery charge
  • Powertrain Control Module (PCM) Programming
  • Faulty Powertrain Control Module
  • Powertrain Control Module harness is open or shorted
  • Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P0604 2011 Ford Fusion?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0604 2011 Ford Fusion 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.

Need more information about the P0604 2011 Ford Fusion code?

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Need Help with the Code?

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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 P0604 2011 Ford Fusion Code

1. What are the common symptoms of OBDII code P0604 in a 2011 Ford Fusion?

- Common symptoms include rough idling, engine stalling, poor fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0604 indicate in a 2011 Ford Fusion?

- The code P0604 indicates an Internal Control Module Random Access Memory (RAM) Error in the engine control module (ECM) of the vehicle.

3. What are the possible causes of the Internal Control Module Random Access Memory Error (P0604) in a 2011 Ford Fusion?

- The possible causes of P0604 in a 2011 Ford Fusion may include a faulty ECM, electrical interference, a software glitch, or wiring issues.

4. How can I diagnose the Internal Control Module Random Access Memory Error (P0604) in my 2011 Ford Fusion?

- Diagnosing P0604 typically involves using an OBDII scanner to retrieve the error code, checking for any other related codes, and then inspecting the ECM and its connections for any visible damage.

5. Can I continue driving my 2011 Ford Fusion with the OBDII code P0604 present?

- It is not recommended to drive the vehicle with the P0604 code present, as it can lead to further damage and potential safety issues.

6. How can I repair the Internal Control Module Random Access Memory Error (P0604) in my 2011 Ford Fusion?

- Repairing P0604 may involve reprogramming or replacing the ECM, addressing any wiring or connection issues, and clearing the error code with an OBDII scanner.

7. Is it possible to clear the OBDII code P0604 in a 2011 Ford Fusion without fixing the underlying issue?

- Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the problem will likely reoccur until properly repaired.

8. How much does it typically cost to repair the Internal Control Module Random Access Memory Error (P0604) in a 2011 Ford Fusion?

- The cost of repairing P0604 can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix the OBDII code P0604 in a 2011 Ford Fusion?

- While some DIY enthusiasts may be able to diagnose and address simpler causes of P0604, it is generally recommended to consult a professional mechanic for proper repair and reprogramming of the ECM.

10. Will resetting the ECM help resolve the Internal Control Module Random Access Memory Error (P0604) in a 2011 Ford Fusion?

- Resetting the ECM may temporarily clear the error code, but if the underlying issue causing P0604 is not addressed, the code is likely to reappear.

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