AutoCodes – Ford – P0605 2009 Ford Fusion

P0605 2009 Ford Fusion Code - PCM Read Only Memory Error

Quick Answer

The Powertrain Control Module (PCM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. Common causes include Powertrain Control Module (PCM) programming error, Physically damaged Powertrain Control Module, Faulty Powertrain 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: P0605 2009 Ford Fusion indicates PCM Read Only Memory Error .
Common causes: Common causes include Powertrain Control Module (PCM) programming error, Physically damaged Powertrain Control Module, Faulty Powertrain 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 3,853

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 Jul 30, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0605 2009 Ford Fusion Description

The Powertrain Control Module (PCM) continuously monitors its own internal memory status, internal circuits, and output signals transmitted to the throttle actuator. This self-check insures that the Powertrain Control Module is functioning properly. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module Read Only Memory (ROM) has been corrupted.

OBDII Code P0605 2009 Ford Fusion - PCM Read Only Memory Error - AutoCodes.com — P0605 2009 Ford Fusion Code - PCM Read Only Memory Error

What does this mean?

What are the Possible Causes of the DTC P0605 2009 Ford Fusion?

Powertrain Control Module (PCM) programming error
Physically damaged Powertrain Control Module
Faulty Powertrain Control Module
Powertrain Control Module harness is open or shorted
Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P0605 2009 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.

What does this mean?

Code Tech Notes

Try clearing the code before replacing any parts. Reprogram the Vehicle Identification (VID) block (use as built data). Check for other Diagnostic Trouble Code (DTC) or drive symptoms for further action. Make sure to check for aftermarket performance products before installing a new Powertrain Control Module (PCM).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0605 2009 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.

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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 P0605 2009 Ford Fusion Code

1. What is OBDII code P0605 on a 2009 Ford Fusion?

The P0605 code for a 2009 Ford Fusion indicates a PCM (Powertrain Control Module) read only memory error.

2. What are the common symptoms of a PCM read only memory error (P0605) on a 2009 Ford Fusion?

Common symptoms of a PCM read only memory error may include engine stalling, rough idling, poor acceleration, and the illumination of the check engine light.

3. What are the possible causes of the P0605 code on a 2009 Ford Fusion?

Possible causes of the P0605 code on a 2009 Ford Fusion include a faulty PCM, damaged wiring or connectors, or a software malfunction within the PCM.

4. How do I diagnose the PCM read only memory error (P0605) on my 2009 Ford Fusion?

Diagnosing the P0605 code typically involves using a diagnostic scanner to retrieve the trouble codes and performing thorough inspections of the PCM, wiring, and connectors for any signs of damage.

5. Can a PCM read only memory error (P0605) on a 2009 Ford Fusion be repaired?

Repairing a PCM read only memory error may involve reprogramming the PCM, repairing or replacing damaged wiring or connectors, or replacing the PCM if it is found to be faulty.

6. Is it safe to continue driving my 2009 Ford Fusion with the P0605 code present?

It is not recommended to continue driving your 2009 Ford Fusion with the P0605 code present, as it can lead to poor engine performance and potential safety hazards.

7. How much does it typically cost to repair a PCM read only memory error (P0605) on a 2009 Ford Fusion?

The cost of repairing a PCM read only memory error can vary depending on the extent of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any DIY repair tips for addressing a P0605 code on a 2009 Ford Fusion?

DIY repair tips for addressing a P0605 code may include checking and cleaning the PCM connectors, ensuring proper wiring connections, and following manufacturer-specific diagnostic procedures.

9. Can a PCM read only memory error (P0605) on a 2009 Ford Fusion cause other issues with the vehicle?

Yes, a PCM read only memory error can cause other issues with the vehicle, such as poor fuel efficiency, misfiring, or transmission problems, if not addressed promptly.

10. How often does the PCM read only memory error (P0605) occur in a 2009 Ford Fusion?

The occurrence of a PCM read only memory error (P0605) in a 2009 Ford Fusion can vary and may be influenced by factors such as vehicle age, maintenance history, and driving conditions.