AutoCodesToyota – P0505 1997 Toyota Camry

P0505 1997 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 1997 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.
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Code Popularity 10,793
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 1997 Toyota Camry Description

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. In this way the intake air volume bypassing the throttle valve is regulated, controlling the engine speed. The Engine Control Module (ECM) operates only the IAC valve to perform idle-up and provide feedback for the target idling 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 1997 Toyota Camry - Idle Control System Malfunction - AutoCodes.com
P0505 1997 Toyota Camry Code - Idle Control System Malfunction

What are the Possible Causes of the DTC P0505 1997 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 1997 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0505 1997 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 1997 Toyota Camry 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 1997 Toyota Camry Code

1. What are the common symptoms of OBDII code P0505 in a 1997 Toyota Camry?

- Common symptoms include high idle speed, low idle speed, fluctuating idle speed, stalling at idle, and potential difficulty starting the car.

2. What could cause the Idle Control System Malfunction (P0505) in a 1997 Toyota Camry?

- The most common causes of P0505 in a 1997 Toyota Camry are a faulty idle air control valve, dirty throttle body, vacuum leaks, or issues with the engine's computer system.

3. How can I diagnose the Idle Control System Malfunction in my 1997 Toyota Camry?

- To diagnose P0505, you can use an OBDII scanner to read the trouble code and then inspect the idle air control valve, throttle body, vacuum hoses, and wiring for any signs of damage or wear.

4. Can I drive my 1997 Toyota Camry with OBDII code P0505?

- It is not recommended to drive your Camry with P0505 for an extended period, as it can lead to poor engine performance, reduced fuel efficiency, and potential stalling issues. It's best to address the issue promptly.

5. How can I repair OBDII code P0505 in my 1997 Toyota Camry?

- Repairing P0505 typically involves cleaning or replacing the idle air control valve, cleaning the throttle body, checking and repairing any vacuum leaks, and resetting the engine's computer system.

6. Are there any DIY tips for fixing P0505 in a 1997 Toyota Camry?

- DIY tips include cleaning the idle air control valve and throttle body with appropriate cleaners, checking and repairing any vacuum leaks, and ensuring all electrical connections are secure.

7. Will resetting the ECU clear the P0505 code in my 1997 Toyota Camry?

- Resetting the Engine Control Unit (ECU) may temporarily clear the P0505 code, but if the underlying issue causing the code is not addressed, the code is likely to return.

8. Is it safe to ignore OBDII code P0505 in my 1997 Toyota Camry?

- Ignoring P0505 can lead to poor engine performance, reduced fuel efficiency, and potential stalling, so it is not recommended to ignore this code.

9. How much does it cost to repair the Idle Control System Malfunction in a 1997 Toyota Camry?

- The cost of repairing P0505 in a 1997 Toyota Camry can vary depending on the extent of the issue and whether you choose to do the repairs yourself or take it to a mechanic. Costs typically range from $100 to $500.

10. Can a faulty idle air control valve cause OBDII code P0505 in a 1997 Toyota Camry?

- Yes, a faulty idle air control valve is a common cause of P0505 in a 1997 Toyota Camry. If the valve is not functioning properly, it can disrupt the engine's idle control system and trigger the code.

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