AutoCodes – Mercedes-Benz – P0606 Mercedes-Benz

P0606 Mercedes-Benz Code - ECM/PCM Processor Fault

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 Mercedes-Benz indicates ECM/PCM Processor Fault.
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 34,982

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 Mercedes-Benz 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 Mercedes-Benz - ECM/PCM Processor Fault - AutoCodes.com — P0606 Mercedes-Benz Code - ECM/PCM Processor Fault

What does this mean?

What are the Possible Causes of the DTC P0606 Mercedes-Benz?

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 Mercedes-Benz?

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/PCM.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0606 Mercedes-Benz 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 P0606 Mercedes-Benz code?

Need more information on how to fix the P0606 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0606 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

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 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0606 in a Mercedes-Benz?

The common symptoms of OBDII code P0606 in a Mercedes-Benz include engine stalling, poor fuel efficiency, rough idling, and difficulty starting the vehicle.

2. What does the OBDII code P0606 for a Mercedes-Benz indicate?

OBDII code P0606 for a Mercedes-Benz indicates an ECM/PCM processor fault. This means there may be an issue with the engine control module or powertrain control module.

3. What are the possible causes of OBDII code P0606 in a Mercedes-Benz?

Possible causes of OBDII code P0606 in a Mercedes-Benz include a faulty ECM/PCM, damaged wiring or connectors, software issues, or a low vehicle battery voltage.

4. How can I diagnose the OBDII code P0606 in my Mercedes-Benz?

Diagnosing OBDII code P0606 in a Mercedes-Benz requires using a diagnostic scanner to read the code, checking for related symptoms, inspecting wiring and connectors, and testing the ECM/PCM.

5. Is it safe to continue driving my Mercedes-Benz with OBDII code P0606?

It is not recommended to continue driving your Mercedes-Benz with OBDII code P0606, as it can lead to further engine performance issues and potential safety concerns.

6. Can I repair OBDII code P0606 in my Mercedes-Benz myself?

Repairing OBDII code P0606 in a Mercedes-Benz may require advanced diagnostic tools and expertise. It is recommended to seek assistance from a professional mechanic or dealership.

7. How much does it cost to fix OBDII code P0606 in a Mercedes-Benz?

The cost to fix OBDII code P0606 in a Mercedes-Benz can vary depending on the root cause of the issue. Repairs may range from a few hundred to over a thousand dollars.

8. Are there any preventive measures to avoid OBDII code P0606 in a Mercedes-Benz?

To help prevent OBDII code P0606 in a Mercedes-Benz, it is essential to perform regular vehicle maintenance, address any warning lights promptly, and ensure the vehicle's electrical system is in good condition.

9. Can a low vehicle battery voltage trigger OBDII code P0606 in a Mercedes-Benz?

Yes, a low vehicle battery voltage can trigger OBDII code P0606 in a Mercedes-Benz. It is crucial to maintain a healthy battery to prevent potential ECM/PCM processor faults.

10. How long does it take to repair OBDII code P0606 in a Mercedes-Benz?

The repair time for OBDII code P0606 in a Mercedes-Benz can vary based on the diagnosis and required fixes. It may take a few hours to a day or more, depending on the complexity of the issue.