P0505 2007 Toyota Highlander 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 2007 Toyota Highlander 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 2007 Toyota Highlander 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 2007 Toyota Highlander?
- 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 2007 Toyota Highlander?
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 2007 Toyota Highlander 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 2007 Toyota Highlander code?
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Need Help with the Code?
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Frequently Asked Questions about P0505 2007 Toyota Highlander Code
1. What does OBDII code P0505 mean on a 2007 Toyota Highlander?
- OBDII code P0505 indicates a malfunction in the Idle Air Control (IAC) system of the vehicle.
2. What are the common symptoms of OBDII code P0505 in a Toyota Highlander?
- Common symptoms include irregular idle speed, stalling at idle, and potential difficulty starting the engine.
3. What are some possible causes of OBDII code P0505 on a 2007 Toyota Highlander?
- Causes can include a faulty idle air control valve, dirty or clogged throttle body, vacuum leaks, or issues with the wiring or connectors related to the IAC system.
4. How can I diagnose the cause of OBDII code P0505 in my Toyota Highlander?
- Diagnosing the issue may involve checking the idle air control valve for proper operation, inspecting the throttle body for buildup, and conducting a thorough inspection of the IAC system components.
5. Can OBDII code P0505 in a Toyota Highlander be fixed without professional help?
- Depending on the cause, some DIY fixes may include cleaning the throttle body, checking for vacuum leaks, or replacing the idle air control valve. However, complex issues may require professional assistance.
6. Is it safe to continue driving with OBDII code P0505 present in a Toyota Highlander?
- While the vehicle may still be operable with this code, it is not recommended to ignore the issue, as it can lead to further engine problems and potential safety hazards.
7. How much does it typically cost to repair OBDII code P0505 in a 2007 Toyota Highlander?
- The cost of repairs can vary based on the specific cause of the code, but it may range from around $100 for a simple fix like cleaning the throttle body to several hundred dollars for more complex repairs.
8. Can resetting the OBDII code P0505 in a Toyota Highlander make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear once the problem resurfaces.
9. Are there any preventive measures to avoid OBDII code P0505 in a 2007 Toyota Highlander?
- Regular maintenance, such as cleaning the throttle body and checking for vacuum leaks, can help prevent issues that may trigger the P0505 code.
10. How long does it typically take to repair OBDII code P0505 in a Toyota Highlander?
- Repair times can vary based on the specific cause and complexity of the issue. Simple fixes may be completed in a few hours, while more involved repairs may take longer and require professional expertise.
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