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Engine-Codes – Scion – P0505 2006 Scion xB

P0505 2006 Scion xB Code - Idle Control System Malfunction

Quick Answer

The P0505 diagnostic trouble code (DTC) for a 2006 Scion xB indicates an Idle Control System Malfunction. Common causes include Faulty idle air control valve (IAC), Dirty or clogged throttle body, Vacuum leaks in the intake system. 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
P0505 2006 Scion xB indicates Idle Control System Malfunction.
Common causes
Common causes include Faulty idle air control valve (IAC), Dirty or clogged throttle body, Vacuum leaks in the intake system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0505 2006 Scion xB Description

The P0505 diagnostic trouble code (DTC) for a 2006 Scion xB indicates an Idle Control System Malfunction. This code is triggered when the engine control module (ECM) detects that the idle speed control system is not functioning properly. The idle control system is responsible for maintaining a consistent and stable idle speed when the vehicle is at a standstill. When this system malfunctions, it can lead to erratic idle speeds, stalling, or rough idling.

OBDII Code P0505 2006 Scion xB - Idle Control System Malfunction
P0505 2006 Scion xB Code - Idle Control System Malfunction

Common Causes of P0505 2006 Scion xB

  1. Faulty idle air control valve (IAC)
  2. Dirty or clogged throttle body
  3. Vacuum leaks in the intake system
  4. Faulty throttle position sensor (TPS)
  5. Wiring or electrical issues in the idle control system

Symptoms of P0505 2006 Scion xB

  1. Fluctuating idle speed
  2. Engine stalling at idle
  3. Rough or uneven idle
  4. Check Engine Light illuminated
  5. Poor acceleration or throttle response

How to Fix P0505 2006 Scion xB

  1. Diagnose the issue using a scan tool to confirm the P0505 code and identify the specific component causing the malfunction.
  2. Inspect the idle air control valve (IAC) and throttle body for any signs of dirt, debris, or damage. Clean or replace these components as necessary.
  3. Check for vacuum leaks in the intake system and repair any leaks found.
  4. Test the throttle position sensor (TPS) for proper operation and replace if faulty.
  5. Clear the DTC and reset the ECM to see if the issue has been resolved. Test drive the vehicle to ensure the idle control system is functioning correctly.

Cost to Fix P0505 2006 Scion xB

The cost of repairing a P0505 code on a 2006 Scion xB can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the parts needed for this repair, such as a new idle air control valve or throttle body, can range from $50 to $200. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $150 to $500 for resolving an Idle Control System Malfunction on your vehicle. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0505 2006 Scion xB

Before replacing any parts, try cleaning the Idle air control valve.

When is the Code Detected?

The ECM regulates the idle speed by opening and closing the throttle valve using the ETCS. The ECM concludes that the idle speed control ECM function is malfunctioning if: 1) the actual idle RPM varies more than the specified amount five times or more during a drive cycle, or 2) a learning value of the idle speed control remains at the maximum or minimum five times or more during a drive cycle. The ECM will turn on the MIL and set a DTC.
Example: If the actual idle RPM varies from the target idle RPM by more than 200* rpm five times during a drive cycle, the ECM will turn on the MIL and will set a DTC.

Need more information about the P0505 2006 Scion xB code?

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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 P0505 2006 Scion xB Code

1. What are the common symptoms of OBDII code P0505 in a 2006 Scion xB?

- Common symptoms include fluctuating idle speed, stalling at idle, and the Check Engine light coming on.

2. What is the main cause of the Idle Control System Malfunction (P0505) in a 2006 Scion xB?

- The main cause is often a faulty Idle Air Control (IAC) valve or a problem with the throttle body.

3. How can I diagnose the P0505 code in my 2006 Scion xB?

- Diagnosing the code involves checking the IAC valve for proper operation, inspecting the throttle body for carbon buildup, and scanning for any other related codes.

4. Can a dirty throttle body cause the P0505 code in a 2006 Scion xB?

- Yes, a dirty or clogged throttle body can restrict airflow and cause the Idle Control System Malfunction code to trigger.

5. What are some DIY repair tips for fixing the P0505 code in a 2006 Scion xB?

- DIY repair tips include cleaning the throttle body, checking for vacuum leaks, and testing the IAC valve for proper function.

6. Should I replace the IAC valve if I get the P0505 code in my 2006 Scion xB?

- If the IAC valve is found to be faulty during diagnosis, replacing it is often the recommended course of action to resolve the issue.

7. Can a faulty oxygen sensor trigger the P0505 code in a 2006 Scion xB?

- While a faulty oxygen sensor is not a direct cause of the P0505 code, it can lead to related issues that may contribute to the code being triggered.

8. Is it safe to continue driving my 2006 Scion xB with the P0505 code present?

- It is generally not recommended to drive with the P0505 code active, as it can lead to poor engine performance, stalling, and potential safety hazards.

9. Will resetting the Check Engine light make the P0505 code go away in a 2006 Scion xB?

- Resetting the Check Engine light may temporarily clear the code, but it will likely return if the underlying issue causing the P0505 code is not addressed.

10. How much does it typically cost to repair the Idle Control System Malfunction (P0505) in a 2006 Scion xB?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

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