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P0511

Overview

Code

P0511

Code Type

P

Code Class

P0

System

Idle Control

Severity Level

Medium

Emissions Related

true

Drivability Impact

Minor

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0511 indicates an idle air control valve performance issue

Symptoms

Engine misfire; Rough idle

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 air control system

Possible Causes

Faulty IAC valve; Clogged IAC passages

Diagnostic Steps

1 Inspect IAC valve 2 Clean IAC valve passages

Drive Safety Notes

Increased emissions possible

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