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P0505 2006 Scion xB Code - Idle Control System Malfunction

- Code Popularity: 5,883 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0505 2006 Scion xB?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Open or short in IAC valve circuit
  • IAC valve stuck or closed
  • A/C switch circuit
  • Air induction system
  • Ventilation valve and hose
  • ECM
⚠ Does your Scion have Safety Recalls? → Check here

How to Fix the DTC P0505 2006 Scion xB?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

Before replacing any parts, try cleaning the Idle air control valve.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0505 2006 Scion xB code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

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 if: 1) the actual idle RPM varies more than the specified amount five times or more during a drive cycle, or 2) a learning value of the idle speed control remains at the maximum or minimum five times or more during a drive cycle. The ECM will turn on the MIL and set a DTC.
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 Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine hard to start
  • Rough or erratic idle speed

Code P0505 2006 Scion xB Description

The Idle Air Control (IAC) valve, a rotary solenoid type, is located under the throttle body. Intake air bypassing the throttle valve flows into the IAC valve through a passage. The valve regulates the volume of intake air that bypasses the throttle valve and allows the engine idling speed to be controlled. The IAC valve is used by the ECM to perform idle-up and its feedback signal is used as one factor in target engine idling speed regulation.

OBDII Code P0505 2006 Scion xB - Idle Control System Malfunction - AutoCodes.com
P0505 2006 Scion xB Code - Idle Control System Malfunction

Need More Information on the Code?

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Code P0505 2006 Scion xB comments

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