AutoCodes – Volvo – P0506 Volvo

P0506 Volvo Code - Idle Too Little Response

Quick Answer

This system automatically controls engine idle speed to a specified level. Common causes include Faulty Air Assisted Control Valve, Air Assisted Control Valve harness is open or shorted, Air Assisted Control Valve 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: P0506 Volvo indicates Idle Too Little Response.
Common causes: Common causes include Faulty Air Assisted Control Valve, Air Assisted Control Valve harness is open or shorted, Air Assisted Control Valve 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 8,903

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0506 Volvo Description

This system automatically controls engine idle speed to a specified level. Idle speed is controlled through fine adjustment of the amount of air which by-passes the throttle valve via Air Assisted Control Valve. The valve changes the opening of the air by-pass passage to control the amount of assisted air.

OBDII Code P0506 Volvo - Idle Too Little Response - AutoCodes.com — P0506 Volvo Code - Idle Too Little Response

What does this mean?

What are the Possible Causes of the DTC P0506 Volvo?

Faulty Air Assisted Control Valve
Air Assisted Control Valve harness is open or shorted
Air Assisted Control Valve circuit poor electrical connection

How to Fix the DTC P0506 Volvo?

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 P0506 Volvo 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 P0506 Volvo code?

Need more information on how to fix the P0506 Volvo code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0506 Volvo 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 P0506 Volvo Code

1. What are the common symptoms of OBDII code P0506 in a Volvo?

Symptoms may include the engine idling too low or stalling, rough idling, poor acceleration, and potential issues with the vehicle's overall performance.

2. What are some possible causes of the P0506 code in a Volvo?

Common causes can include a faulty idle air control valve (IACV), vacuum leaks, dirty throttle body, issues with the mass airflow sensor (MAF), or a malfunctioning throttle position sensor (TPS).

3. How can I diagnose the cause of the P0506 code in my Volvo?

Diagnosis typically involves checking for vacuum leaks, inspecting the IACV and throttle body, testing the MAF and TPS sensors, and scanning for any other related codes that may provide additional insight.

4. Can I drive my Volvo with the P0506 code?

It is generally not recommended to drive your Volvo with the P0506 code present, as it may lead to further damage or safety issues. It is advisable to address the underlying cause as soon as possible.

5. How can I repair the P0506 code in my Volvo?

Repair options may include cleaning or replacing the idle air control valve, fixing any vacuum leaks, cleaning the throttle body, replacing faulty sensors, or resetting the engine control module (ECM) after repairs are made.

6. Will resetting the ECM clear the P0506 code in my Volvo?

Resetting the ECM may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It is essential to diagnose and repair the root cause of the problem.

7. Can a DIY enthusiast fix the P0506 code in a Volvo?

Depending on your level of expertise, some basic repairs such as cleaning the throttle body or replacing sensors may be possible for a DIY enthusiast. However, for more complex issues like diagnosing electrical problems, professional help may be necessary.

8. How much does it typically cost to repair the P0506 code in a Volvo?

The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. Simple fixes like cleaning the throttle body may be relatively inexpensive, while replacing sensors or the IACV can be more costly.

9. How long does it take to repair the P0506 code in a Volvo?

The repair time can vary based on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved diagnostics and replacements could require leaving the vehicle at a repair shop for a day or more.

10. Will the P0506 code cause damage to my Volvo if left unaddressed?

Continuing to drive with the P0506 code can potentially lead to poor engine performance, reduced fuel efficiency, and increased emissions. Over time, neglecting the issue may cause additional damage to engine components.