AutoCodesToyota – P0505 2011 Toyota Camry

P0505 2011 Toyota Camry Code - Idle Air Control System

Quick Answer

The idle speed is controlled by the Electronic Throttle Control System (ETCS). Common causes include Dirty Throttle Body, Faulty Electronic Throttle Control System (ETCS) (Throttle body), Electronic Throttle Control System harness is open or shorted. 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 2011 Toyota Camry indicates Idle Air Control System.
Common causes
Common causes include Dirty Throttle Body, Faulty Electronic Throttle Control System (ETCS) (Throttle body), Electronic Throttle Control System harness is open or shorted.
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 5,973
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 27, 2020
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Code P0505 2011 Toyota Camry Description

The idle speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is composed of the throttle motor, which operates the throttle valve, and the throttle position sensor, which detects the opening angle of the throttle valve. The Engine Control Module (ECM) controls the throttle motor to provide the proper throttle valve opening angle to obtain the target idle speed.
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 and set the Diagnostic Trouble Code (DTC) if:
1. The actual idle RPM varies more than the specified amount five times or more during a drive cycle
2. The learning value of the idle speed control remains at the maximum or minimum five times or more during a drive cycle.

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.
OBDII Code P0505 2011 Toyota Camry - Idle Air Control System - AutoCodes.com
P0505 2011 Toyota Camry Code - Idle Air Control System

What are the Possible Causes of the DTC P0505 2011 Toyota Camry?

  • Dirty Throttle Body
  • Faulty Electronic Throttle Control System (ETCS) (Throttle body)
  • Electronic Throttle Control System harness is open or shorted
  • Electronic Throttle Control System circuit poor electrical connection
  • Air Induction System (Intake leak)
  • PCV hose connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0505 2011 Toyota Camry?

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 P0505 2011 Toyota Camry 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 2011 Toyota Camry code?

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Need Help with the 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 2011 Toyota Camry Code

1. What does OBDII code P0505 mean on a 2011 Toyota Camry?

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

2. What are the common symptoms of code P0505 in a 2011 Toyota Camry?

Symptoms may include rough idling, stalling, fluctuating idle RPMs, or the Check Engine Light turning on.

3. What causes the P0505 code on a Toyota Camry?

Common causes include a dirty or faulty Idle Air Control valve, vacuum leaks, a damaged throttle body, or wiring/electrical issues.

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

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

5. How do I fix a P0505 code on my 2011 Toyota Camry?

Start by cleaning the IAC valve and throttle body. If the problem persists, inspect the IAC valve, vacuum lines, and electrical connections, replacing faulty components if necessary.

6. Is it safe to drive with a P0505 code?

Driving with a P0505 code can be risky if the engine stalls or idles erratically, especially in traffic. It’s best to address the issue promptly.

7. How can I prevent the P0505 code from occurring again?

Regularly clean the throttle body and IAC valve, check for vacuum leaks, and ensure proper maintenance of air intake components.

8. Is replacing the Idle Air Control valve always necessary for a P0505 code?

Not always. Cleaning the valve and throttle body may resolve the issue. Replacement is only needed if the valve is damaged or non-functional.

9. Can a vacuum leak cause the P0505 code?

Yes, a vacuum leak can disrupt the IAC system’s operation, leading to inconsistent idle speeds and triggering the P0505 code.

10. How much does it cost to repair a P0505 code on a 2011 Toyota Camry?

Repair costs can range from $100 for cleaning and diagnostics to $300-$500 if the IAC valve or related components need replacement.

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