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P0505

Overview

Code

P0505

Code Type

P

Code Class

P0

System

Engine

Severity Level

Medium

Emissions Related

false

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0505 indicates a malfunction in the idle air control (IAC) system

Symptoms

Rough idle; Engine stalling

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Idle speed control

Possible Causes

Faulty IAC valve; Vacuum leaks

Diagnostic Steps

1 Inspect IAC valve; 2 Check for intake leaks

Drive Safety Notes

Engine may stall at idle

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