P0505 1999 Toyota Camry Code - Idle Control System Malfunction
Quick Answer
The rotary solenoid type Idle Air Control (IAC) valve is located on the throttle body and intake air bypassing the throttle valve is directed to the IAC valve through a passage. Common causes include Idle Air Control (IAC) Valve is stuck or closed, Faulty Idle Air Control Valve, Idle Air Control Valve 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 1999 Toyota Camry indicates Idle Control System Malfunction.
- Common causes
- Common causes include Idle Air Control (IAC) Valve is stuck or closed, Faulty Idle Air Control Valve, Idle Air Control Valve 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 1999 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 1999 Toyota Camry?
- Idle Air Control (IAC) Valve is stuck or closed
- Faulty Idle Air Control Valve
- Idle Air Control Valve harness is open or shorted
- Idle Air Control Valve circuit poor electrical connection
- Air Induction System (Intake leak)
- PCV hose connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0505 1999 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 1999 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 1999 Toyota Camry code?
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Frequently Asked Questions about P0505 1999 Toyota Camry Code
1. What are the common symptoms of OBDII code P0505 in a 1999 Toyota Camry?
Symptoms may include high or low idle speeds, stalling at idle, poor acceleration, and the Check Engine light illuminated on the dashboard.
2. What is the primary cause of OBDII code P0505 in a 1999 Toyota Camry?
The most common cause is a malfunctioning Idle Air Control (IAC) valve, which is responsible for regulating the engine's idle speed.
3. How can I diagnose the cause of OBDII code P0505 in my 1999 Toyota Camry?
Perform a visual inspection of the IAC valve, check for vacuum leaks, test the throttle position sensor, and use a diagnostic scanner to monitor idle control system parameters.
4. Can a dirty throttle body cause OBDII code P0505 in a 1999 Toyota Camry?
Yes, a dirty or carbon-fouled throttle body can restrict airflow and affect the idle control system, potentially triggering code P0505.
5. Is it safe to continue driving my 1999 Toyota Camry with OBDII code P0505?
It is not recommended to drive with a malfunctioning idle control system, as it can lead to poor engine performance, stalling, and other potential safety hazards.
6. How can I repair OBDII code P0505 in my 1999 Toyota Camry?
Common repairs include cleaning or replacing the IAC valve, cleaning the throttle body, fixing vacuum leaks, and ensuring proper operation of related sensors.
7. Can resetting the OBDII code P0505 in a 1999 Toyota Camry 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 return.
8. Are there any DIY tips for fixing OBDII code P0505 in a 1999 Toyota Camry?
DIY tips include cleaning the IAC valve and throttle body, checking for loose or damaged vacuum hoses, and ensuring all electrical connections are secure.
9. How much does it typically cost to repair OBDII code P0505 in a 1999 Toyota Camry at a professional mechanic?
Costs can vary depending on the exact cause of the issue, but on average, repairs for code P0505 can range from $100 to $500, including parts and labor.
10. Will OBDII code P0505 cause my 1999 Toyota Camry to fail an emissions test?
Yes, a malfunction in the idle control system resulting in code P0505 can cause your vehicle to fail an emissions test due to improper engine performance.
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