P0505 TOYOTA - Idle Air Control System

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

P0505 TOYOTA Possible Causes

  • Electronic Throttle Control System (ETCS).
  • Air induction system
  • PCV hose connection

First diagnose P0505 TOYOTA code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

P0505 TOYOTA Tech Notes

The is a factory service bulletin for the following Toyota vehicles:

2005 and 2009 Toyota Avalon
2007 and 2010 Toyota Camry
2008 and 2009 Toyota Highlander
2006 and 2009 Toyota RAV4
2007 and 2010 Toyota Sienna
2009 Toyota Venza
Toyota Factory Service Bulletin OBDII Code P0505





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Cost of diagnosing the P0505 TOYOTA code

    Labor: 1.0

    The cost of diagnosing the P0505 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

When is the P0505 TOYOTA 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.

P0505 TOYOTA Possible Symptoms

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

P0505 TOYOTA Meaning

The idle speed is controlled by the Electronic Throttle Control System (ETCS). The ETCS is composed of the throttle motor, which operates the throttle valve, and the throttle position sensor, which detects the opening angle of the throttle valve. The Engine Control Module (ECM) controls the throttle motor to provide the proper throttle valve opening angle to obtain the target idle speed.
OBDII Code P0505 TOYOTA - Idle Air Control System - Engine-Codes.com

P0505 TOYOTA More Information

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