AutoCodes – Ford – P0606 2009 Ford Fusion

P0606 2009 Ford Fusion Code - Powertrain Control Module Internal Communication Error

Quick Answer

The Powertrain Control Module (PCM) continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. Common causes include Powertrain Control Module (PCM) Harness power supply circuit is open or shorted, Powertrain Control Module Programming, 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: P0606 2009 Ford Fusion indicates Powertrain Control Module Internal Communication Error.
Common causes: Common causes include Powertrain Control Module (PCM) Harness power supply circuit is open or shorted, Powertrain Control Module Programming, 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 2,535

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 Dec 05, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0606 2009 Ford Fusion Description

The Powertrain Control Module (PCM) continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. This self−check insures that the PCM is functioning properly. If any malfunction is detected, the PCM will set the code and illuminate the engine light. The Diagnostic Trouble Code (DTC) indicates the PCM has experienced an internal memory fault.

OBDII Code P0606 2009 Ford Fusion - Powertrain Control Module Internal Communication Error - AutoCodes.com — P0606 2009 Ford Fusion Code - Powertrain Control Module Internal Communication Error

What does this mean?

What are the Possible Causes of the DTC P0606 2009 Ford Fusion?

Powertrain Control Module (PCM) Harness power supply circuit is open or shorted
Powertrain Control Module Programming
Faulty Powertrain Control Module

How to Fix the DTC P0606 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

Check the Powertrain Control Module (PCM) fuse, if the fuse is OK, try erasing the code first and if the code comes back you may have to reprogram or replace the PCM.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0606 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 P0606 2009 Ford Fusion Code

1. What does the OBDII code P0606 mean for a 2009 Ford Fusion?

P0606 indicates an internal communication error within the Powertrain Control Module (PCM), suggesting it has failed or is malfunctioning.

2. What are the common symptoms of the P0606 code in a 2009 Ford Fusion?

Symptoms may include the Check Engine Light turning on, engine stalling, rough idling, poor performance, or the vehicle failing to start.

3. What causes the P0606 code to appear in a 2009 Ford Fusion?

Common causes include a faulty PCM, software corruption, electrical issues such as damaged wiring or poor ground connections, or voltage irregularities from the battery or alternator.

4. Can a low battery cause the P0606 code in a 2009 Ford Fusion?

Yes, a low or failing battery, or issues with the alternator, can cause voltage fluctuations that may trigger the P0606 code.

5. Is the PCM the only component at fault when the P0606 code appears?

Not necessarily. While the PCM is often the culprit, related issues such as wiring damage, loose connections, or incorrect voltage levels should be checked before replacing the PCM.

6. How can I diagnose the P0606 code on my 2009 Ford Fusion?

Start by inspecting the battery, alternator, and wiring for issues. Then, test the PCM connectors and grounds. If no external problems are found, the PCM itself may need further testing or replacement.

7. Can the P0606 code be cleared without fixing the problem on a 2009 Ford Fusion?

You can clear the code temporarily using an OBDII scanner, but if the underlying issue isnâ€™t resolved, the code will likely return.

8. How much does it cost to fix a P0606 code on a 2009 Ford Fusion?

Repair costs vary. Diagnosing and fixing wiring or ground issues may cost $100-$300, while PCM replacement and programming can cost $500-$1,500 or more depending on labor rates.

9. Can I drive my 2009 Ford Fusion with the P0606 code?

Driving with the P0606 code isnâ€™t recommended, as it can lead to unpredictable engine performance, stalling, or even failure to start.

10. Does the PCM need to be reprogrammed after replacement for a P0606 code?

Yes, if the PCM is replaced, it must be reprogrammed to match the vehicleâ€™s specifications, which typically requires specialized tools and software.