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P0494

Overview

Code

P0494

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

false

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0494 indicates low speed operation detected in the cooling fan system

Symptoms

Engine overheating

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

Cooling fan performance monitoring

Possible Causes

Weak fan motor

Diagnostic Steps

1 Measure fan speed; 2 Test fan motor current

Drive Safety Notes

Overheating risk at low speeds

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