AutoCodes – Scion – P0505 2005 Scion xB

P0505 2005 Scion xB Code - Idle Control System Malfunction

Quick Answer

The Idle Air Control (IAC) valve, a rotary solenoid type, is located under the throttle body. Common causes include Open or short in IAC valve circuit, IAC valve stuck or closed, A/C switch circuit. 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 2005 Scion xB indicates Idle Control System Malfunction.
Common causes: Common causes include Open or short in IAC valve circuit, IAC valve stuck or closed, A/C switch circuit.
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 11,906

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 Mar 30, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0505 2005 Scion xB Description

The Idle Air Control (IAC) valve, a rotary solenoid type, is located under the throttle body. Intake air bypassing the throttle valve flows into the IAC valve through a passage. The valve regulates the volume of intake air that bypasses the throttle valve and allows the engine idling speed to be controlled. The IAC valve is used by the ECM to perform idle-up and its feedback signal is used as one factor in target engine idling speed regulation.

OBDII Code P0505 2005 Scion xB - Idle Control System Malfunction - AutoCodes.com — P0505 2005 Scion xB Code - Idle Control System Malfunction

What does this mean?

What are the Possible Causes of the DTC P0505 2005 Scion xB?

Open or short in IAC valve circuit
IAC valve stuck or closed
A/C switch circuit
Air induction system
Ventilation valve and hose
ECM

How to Fix the DTC P0505 2005 Scion xB?

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

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0505 2005 Scion xB 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 P0505 2005 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 2005 Scion xB Code

1. What are the common symptoms of OBDII code P0505 in a 2005 Scion xB?

- Common symptoms include high idle speed, low idle speed, fluctuating idle speed, stalling at idle, and the Check Engine light being illuminated.

2. What causes the Idle Control System Malfunction code (P0505) in a 2005 Scion xB?

- The P0505 code is often triggered by a faulty idle air control valve (IACV), a vacuum leak, or issues with the throttle body.

3. How can I diagnose the source of the Idle Control System Malfunction in my 2005 Scion xB?

- Diagnosis typically involves checking the IACV for proper operation, inspecting for vacuum leaks, and ensuring the throttle body is clean and functioning correctly.

4. Can a dirty throttle body cause OBDII code P0505 in a 2005 Scion xB?

- Yes, a dirty or clogged throttle body can disrupt the airflow and cause issues with idle control, potentially triggering the P0505 code.

5. What is the recommended repair for OBDII code P0505 in a 2005 Scion xB?

- Depending on the root cause, the repair may involve cleaning or replacing the idle air control valve, fixing any vacuum leaks, or cleaning the throttle body.

6. Is it safe to continue driving my 2005 Scion xB with the P0505 code active?

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

7. Can resetting the OBDII code P0505 in a 2005 Scion xB make it go away permanently?

- Simply resetting the code may temporarily clear the Check Engine light, but if the underlying issue is not addressed, the code is likely to return.

8. Are there any DIY steps I can take to address the P0505 code in my 2005 Scion xB?

- DIY steps may include cleaning the throttle body, checking for vacuum leaks, and inspecting the IACV for proper function, but more complex repairs may require professional assistance.

9. How much does it typically cost to repair the Idle Control System Malfunction in a 2005 Scion xB?

- The cost of repairs can vary depending on the specific issue, but it may range from around $100 for simple fixes like cleaning to several hundred dollars for parts replacement.

10. Can the P0505 code in a 2005 Scion xB affect fuel efficiency?

- Yes, issues related to the P0505 code, such as incorrect idle speed or air/fuel mixture, can impact fuel efficiency negatively, leading to increased fuel consumption.