P0505 2009 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 2009 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.
Code P0505 2009 Toyota Camry Description
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.
What are the Possible Causes of the DTC P0505 2009 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 2009 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.
Code Tech Notes
2009 Toyota Camry Factory Service Bulletin OBDII Code P0505
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0505 2009 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.
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Frequently Asked Questions about P0505 2009 Toyota Camry Code
1. What does the P0505 code mean on a 2009 Toyota Camry?
The P0505 code indicates a malfunction in the Idle Air Control (IAC) system, which regulates the engine's idle speed.
2. What are the symptoms of the P0505 code in a 2009 Toyota Camry?
Symptoms include engine stalling, rough idle, fluctuating idle speed, or the inability to start the vehicle.
3. What causes the P0505 code to appear?
Common causes include a dirty or faulty Idle Air Control (IAC) valve, vacuum leaks, wiring issues, or a malfunctioning engine control module (ECM).
4. Can I drive my 2009 Toyota Camry with the P0505 code?
While it may be possible to drive, it is not recommended as the engine may stall unexpectedly, creating a safety risk.
5. How do I fix the P0505 code on a 2009 Toyota Camry?
Repairs may involve cleaning or replacing the IAC valve, checking for vacuum leaks, repairing wiring, or reprogramming the ECM if necessary.
6. How do I clean the Idle Air Control (IAC) valve on a 2009 Toyota Camry?
Remove the IAC valve, clean it with throttle body cleaner, and ensure all passages are clear before reinstalling.
7. Can a vacuum leak trigger the P0505 code?
Yes, a vacuum leak can disrupt the IAC system's function and trigger the P0505 code.
8. How much does it cost to fix the P0505 code on a 2009 Toyota Camry?
Repair costs vary but may range from $150 to $500 depending on whether cleaning, parts replacement, or ECM reprogramming is needed.
9. Will resetting the ECM clear the P0505 code?
Resetting the ECM may temporarily clear the code, but it won’t fix the underlying issue causing the malfunction.
10. How can I prevent the P0505 code from recurring?
Regular maintenance, including cleaning the throttle body and IAC valve and inspecting for vacuum leaks, can help prevent this code.
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