AutoCodes – Generic – P1606

P1606 Code - VVEL Control Module

Quick Answer

The Variable Valve Event and Lift (VVEL) Control Module consists of a microcomputer and connectors for signal input and output and for power supply. Common causes include Faulty Variable Valve Event and Lift (VVEL) Control Module, VVEL Control Module harness is open or shorted, VVEL 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
P1606 indicates VVEL Control Module.
Common causes
Common causes include Faulty Variable Valve Event and Lift (VVEL) Control Module, VVEL Control Module harness is open or shorted, VVEL 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 29,333
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 24, 2021
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Code P1606 Description

The Variable Valve Event and Lift (VVEL) Control Module consists of a microcomputer and connectors for signal input and output and for power supply. The VVEL control module controls the VVEL system. The Diagnostic Trouble Code (DTC) will be set when the VVEL Control Module calculation function is malfunctioning.
OBDII Code P1606 - VVEL Control Module - AutoCodes.com
P1606 Code - VVEL Control Module

What are the Possible Causes of the DTC P1606?

  • Faulty Variable Valve Event and Lift (VVEL) Control Module
  • VVEL Control Module harness is open or shorted
  • VVEL Control Module circuit poor electrical connection

How to Fix the DTC P1606?

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 P1606 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 P1606 code?

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Need Help with the Code?

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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 P1606 Code

1. What are common symptoms of OBDII code P1606 related to the VVEL Control Module?

Common symptoms include engine misfires, rough idling, reduced power, and potential stalling.

2. What causes OBDII code P1606 to trigger in relation to the VVEL Control Module?

The code is typically triggered by issues with the Variable Valve Event and Lift (VVEL) control module, such as electrical faults or communication errors.

3. How can I diagnose the VVEL Control Module issues causing OBDII code P1606?

Diagnosis involves using a scan tool to read the code, checking for other related codes, inspecting wiring and connectors, and testing the VVEL control module itself.

4. Can a faulty VVEL Control Module be repaired, or does it need to be replaced?

In some cases, the issue causing P1606 can be repaired by fixing wiring connections or addressing electrical faults. However, if the VVEL control module itself is faulty, it may need to be replaced.

5. Are there any simple repair tips for addressing OBDII code P1606 related to the VVEL Control Module?

Ensure all wiring connections related to the VVEL control module are secure, check for any damaged wires or connectors, and reset the code to see if it reoccurs.

6. Is it safe to continue driving with OBDII code P1606 related to the VVEL Control Module?

It is not recommended to ignore this code, as it can lead to further engine performance issues or potential damage if left unresolved. It is best to address the underlying problem promptly.

7. How can I prevent OBDII code P1606 related to the VVEL Control Module from occurring in the future?

Regular maintenance, such as checking and cleaning VVEL components, ensuring proper electrical connections, and addressing any engine performance issues promptly can help prevent this code.

8. Can a DIY enthusiast fix OBDII code P1606 related to the VVEL Control Module?

Depending on the skill level and access to tools, some DIY enthusiasts may be able to address simple causes of P1606, such as checking and cleaning connections. However, more complex issues may require professional help.

9. What role does the VVEL Control Module play in the vehicle's performance?

The VVEL Control Module is responsible for controlling the Variable Valve Event and Lift system, which helps optimize engine performance and fuel efficiency by adjusting valve timing and lift.

10. Will resetting the OBDII code P1606 related to the VVEL Control Module make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it disappear permanently. It is crucial to diagnose and fix the root cause to prevent the code from reoccurring.

Discuss the causes and fixes for P1606 OBDII Code

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