AutoCodes – Generic – P0493

P0493 Code - Fan Overspeed

Quick Answer

P0493 indicates Fan Overspeed. Common causes include Faulty cooling fan clutch, Faulty control unit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0493 indicates Fan Overspeed.
Common causes: Common causes include Faulty cooling fan clutch, Faulty control unit.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 15,405

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
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Code P0493 Description

OBDII Code P0493 - Fan Overspeed - AutoCodes.com — P0493 Code - Fan Overspeed

What does this mean?

What are the Possible Causes of the DTC P0493?

Faulty cooling fan clutch
Faulty control unit

How to Fix the DTC P0493?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0493 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0493 code?

Need more information on how to fix the P0493 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0493 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P0493 Isuzu — Cooling Fan Overspeed

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.