Engine-CodesToyota – P0505 2006 Toyota Camry

P0505 2006 Toyota Camry Code - Idle Air Control System

Quick Answer

The P0505 diagnostic trouble code (DTC) for a 2006 Toyota Camry relates to the Idle Air Control (IAC) system. Common causes include Faulty idle air control valve, Vacuum leak in the intake system, Dirty throttle body. 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 Toyota Camry indicates Idle Air Control System.
Common causes
Common causes include Faulty idle air control valve, Vacuum leak in the intake system, Dirty throttle body.
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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0505 2006 Toyota Camry Description

The P0505 diagnostic trouble code (DTC) for a 2006 Toyota Camry relates to the Idle Air Control (IAC) system. The IAC system is responsible for controlling the engine's idle speed by regulating the amount of air that enters the engine when the throttle is closed. When this code is triggered, it indicates that the engine's idle speed is outside of the manufacturer's specified range.

OBDII Code P0505 2006 Toyota Camry - Idle Air Control System
P0505 2006 Toyota Camry Code - Idle Air Control System

Common Causes of P0505 2006 Toyota Camry

  1. Faulty idle air control valve
  2. Vacuum leak in the intake system
  3. Dirty throttle body
  4. Malfunctioning engine control module (ECM)
  5. Wiring or electrical issues

Symptoms of P0505 2006 Toyota Camry

  1. Erratic idle speed
  2. Engine stalling at low speeds
  3. Difficulty starting the engine
  4. Poor fuel efficiency
  5. Rough idling

How to Fix P0505 2006 Toyota Camry

  1. Begin by diagnosing the specific cause of the P0505 code using a scan tool to identify the underlying issue.
  2. Inspect the idle air control valve and clean or replace it if necessary.
  3. Check for any vacuum leaks in the intake system and repair or replace damaged hoses.
  4. Clean the throttle body to ensure proper airflow and operation.
  5. If the issue persists, consider checking the wiring and connections to the idle air control valve and ECM for any faults.

Cost to Fix P0505 2006 Toyota Camry

The typical repair costs for addressing a P0505 code on a 2006 Toyota Camry can range from $100 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check local rates for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can influence the overall repair costs.

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.

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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 Toyota Camry Code

1. What does the OBDII code P0505 mean on a 2006 Toyota Camry?

P0505 indicates a malfunction in the Idle Air Control (IAC) system, which helps regulate the engine's idle speed.

2. What are the symptoms of code P0505 in a 2006 Toyota Camry?

Common symptoms include rough idling, fluctuating idle speed, stalling at idle, or the engine idling too high or low.

3. What causes the P0505 code to appear in a 2006 Toyota Camry?

Possible causes include a dirty or faulty Idle Air Control valve, intake manifold leaks, damaged wiring or connectors, or a malfunctioning Powertrain Control Module (PCM).

4. Can a dirty throttle body cause the P0505 code?

Yes, a dirty throttle body can restrict airflow, leading to improper idle control and triggering the P0505 code.

5. How do you diagnose a P0505 code in a 2006 Toyota Camry?

Diagnosis involves checking the IAC valve for dirt or damage, inspecting electrical connections, testing for vacuum leaks, and evaluating the throttle body for carbon buildup.

6. Can I drive my 2006 Toyota Camry with a P0505 code?

While the car may still run, driving with this code can result in stalling or unpredictable idle issues, potentially leading to unsafe driving conditions.

7. How do you fix the P0505 code on a 2006 Toyota Camry?

Repairs may include cleaning or replacing the IAC valve, cleaning the throttle body, fixing vacuum leaks, or addressing wiring or PCM issues.

8. How much does it cost to fix the P0505 code on a 2006 Toyota Camry?

Repair costs vary, but cleaning the IAC valve or throttle body may cost $50–$150, while replacing the IAC valve could cost $200–$500, depending on labor rates.

9. Is a vacuum leak a common cause of the P0505 code?

Yes, vacuum leaks can disrupt the idle air control system, leading to improper idle speed and triggering the P0505 code.

10. Can a faulty PCM cause the P0505 code in a 2006 Toyota Camry?

While rare, a malfunctioning PCM could fail to properly control the IAC system and result in the P0505 code. This should be considered after ruling out other causes.

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