AutoCodes – Ford – P0606 2003 Ford F150

P0606 2003 Ford F150 Code - Powertrain Control Module Internal Communication error

Quick Answer

The Engine Control Module (ECM) continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. Common causes include Engine Control Module (ECM) Harness power supply circuit is open or shorted, Engine Control Module (ECM) Programming, Faulty Engine Control Module (ECM). 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 2003 Ford F150 indicates Powertrain Control Module Internal Communication error .
Common causes: Common causes include Engine Control Module (ECM) Harness power supply circuit is open or shorted, Engine Control Module (ECM) Programming, Faulty Engine Control Module (ECM).
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 3,994

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 Jun 14, 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 2003 Ford F150 Description

The Engine Control Module (ECM) continuously monitors its internal memory status, internal circuits, and output signals to the throttle actuator. This selfâˆ’check insures that the ECM is functioning properly. If any malfunction is detected, the ECM will set the code and illuminate the engine light.

OBDII Code P0606 2003 Ford F150 - Powertrain Control Module Internal Communication error - AutoCodes.com — P0606 2003 Ford F150 Code - Powertrain Control Module Internal Communication error

What does this mean?

What are the Possible Causes of the DTC P0606 2003 Ford F150?

Engine Control Module (ECM) Harness power supply circuit is open or shorted
Engine Control Module (ECM) Programming
Faulty Engine Control Module (ECM)

How to Fix the DTC P0606 2003 Ford F150?

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 ECM fuse, if fuse is OK try erasing the code first and if the code comes back you may have to reprogram or replaced the ECM.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0606 2003 Ford F150 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 2003 Ford F150 Code

1. What does the OBDII code P0606 mean on a 2003 Ford F150?

P0606 indicates an internal communication error within the Powertrain Control Module (PCM), suggesting the PCM may be malfunctioning or experiencing a software issue.

2. What are common symptoms of the P0606 code on a 2003 Ford F150?

Common symptoms include the Check Engine Light illuminating, poor engine performance, stalling, difficulty starting, and reduced fuel efficiency.

3. What causes the P0606 code to appear on a 2003 Ford F150?

Potential causes include a faulty PCM, software corruption, electrical issues like damaged wiring or poor connections, or voltage irregularities from the battery or alternator.

4. Can a dead battery trigger the P0606 code on a 2003 Ford F150?

Yes, a weak or dead battery can cause voltage irregularities that may trigger the P0606 code if the PCM does not receive stable power.

5. How do I diagnose the P0606 code on my 2003 Ford F150?

Start by checking the battery voltage, inspecting wiring and connectors to the PCM, and testing the alternator. If no issues are found, the PCM may need further testing or reprogramming.

6. Do I need to replace the PCM if my 2003 Ford F150 shows the P0606 code?

Not always. Before replacing the PCM, rule out wiring issues, software corruption, and power supply problems. A reflash or software update may resolve the issue.

7. How much does it cost to fix the P0606 code on a 2003 Ford F150?

Costs can vary widely. Diagnosing and repairing wiring or power supply issues may cost $100â€“$300, while PCM replacement can cost $500â€“$1,200 including parts and labor.

8. Can I drive my 2003 Ford F150 with the P0606 code active?

Driving with the P0606 code is not recommended, as it can cause performance issues, stalling, or potential damage to other components.

9. How can I prevent the P0606 code on my 2003 Ford F150?

Regularly check the battery and alternator, ensure good electrical connections, and update the PCM software when necessary to prevent communication errors.

10. Can a P0606 code cause long-term damage if ignored?

Yes, ignoring the P0606 code can lead to worsening engine performance, potential stalling, and damage to engine components due to improper PCM functioning.