AutoCodes – Generic – P0606

P0606 Code - Engine Control Module Processor Failure

Quick Answer

The Engine Control Module (ECM) continuously monitors its main and sub CPUs. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection. 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 indicates Engine Control Module Processor Failure.
Common causes
Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection.
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 114,599
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Mar 29, 2024
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Code P0606 Description

The Engine Control Module (ECM) continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from these CPUs are different and deviate from the standard, the ECM illuminates the MIL and stores the Diagnostic Trouble Code (DTC) immediately.
OBDII Code P0606 - Engine Control Module Processor Failure - AutoCodes.com
P0606 Code - Engine Control Module Processor Failure

What are the Possible Causes of the DTC P0606?

  • Faulty Engine Control Module (ECM)
  • Engine Control Module harness is open or shorted
  • Engine Control Module circuit poor electrical connection

How to Fix the DTC P0606?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0606 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 code?

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

Need Help with the Code?

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

Information for Specific Makes

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 Code

1. What is OBDII code P0606?

OBDII code P0606 indicates a failure in the Engine Control Module (ECM) processor.

2. What are common symptoms of a P0606 code?

Common symptoms of a P0606 code include engine stalling, rough idling, poor acceleration, and the illumination of the Check Engine Light.

3. What are the possible causes of a P0606 code?

Possible causes of a P0606 code include a faulty ECM, a software issue within the ECM, damaged wiring or connectors, or a dead or weak vehicle battery.

4. How can I diagnose a P0606 code?

Diagnosing a P0606 code usually involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting wiring and connectors for damage, and testing the ECM's power supply and ground connections.

5. Can I still drive my vehicle with a P0606 code?

It is not recommended to drive your vehicle with a P0606 code, as it can lead to further damage to the engine or other components. It is best to address the issue promptly.

6. How can I repair a P0606 code?

Repairing a P0606 code may involve reprogramming or replacing the ECM, repairing or replacing damaged wiring or connectors, and ensuring the vehicle's battery is in good condition.

7. Can I reset the P0606 code myself?

You can clear the P0606 code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. Will a P0606 code cause my vehicle to fail an emissions test?

A P0606 code can cause your vehicle to fail an emissions test, as it indicates a malfunction in the ECM, which can impact the vehicle's emissions control system.

9. How much does it cost to repair a P0606 code?

The cost to repair a P0606 code can vary depending on the underlying issue, but it may range from a few hundred to a few thousand dollars, especially if the ECM needs to be replaced.

10. How can I prevent a P0606 code from occurring?

To prevent a P0606 code, it is important to maintain your vehicle's battery in good condition, avoid jump-starting the vehicle frequently, and address any engine performance issues promptly to prevent strain on the ECM.

Discuss the causes and fixes for P0606 OBDII Code

  • My wifes 2003 fiat stilo MW picked this code up, when the battery was dying and the engine didnΒ΄t crank properly. With a little help on the phone she managed to start the engine. Battery issues are due to the use of webasto fuel heater and -30 degrees celsius outdoor temp. Just charged the battery and everything is fine now, had to reset the codes thou.

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