AutoCodes – Mazda – P1479 Mazda

P1479 Mazda Code - Cooling Fan Control Circuit Excessive Current Draw

Quick Answer

P1479 Mazda indicates Cooling Fan Control Circuit Excessive Current Draw. Common causes include Fualty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay circuit poor electrical connection. 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: P1479 Mazda indicates Cooling Fan Control Circuit Excessive Current Draw.
Common causes: Common causes include Fualty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay circuit poor electrical connection.
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 3,677

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1479 Mazda Description

OBDII Code P1479 Mazda - Cooling Fan Control Circuit Excessive Current Draw - AutoCodes.com — P1479 Mazda Code - Cooling Fan Control Circuit Excessive Current Draw

What does this mean?

What are the Possible Causes of the DTC P1479 Mazda?

Fualty Cooling Fan Relay
Cooling Fan Relay harness is open or shorted
Cooling Fan Relay circuit poor electrical connection

How to Fix the DTC P1479 Mazda?

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 P1479 Mazda 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 P1479 Mazda code?

Need more information on how to fix the P1479 Mazda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1479 Mazda code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P1479 Mazda Code

1. What are the common symptoms of OBDII code P1479 in a Mazda related to the cooling fan control circuit?

Common symptoms include the cooling fan running at high speed constantly, engine overheating, and the check engine light being illuminated.

2. What are the possible causes of OBDII code P1479 relating to excessive current draw in the cooling fan control circuit of a Mazda?

Potential causes may include a faulty cooling fan motor, a malfunctioning cooling fan relay, a wiring issue, or a problem with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P1479 in my Mazda's cooling fan control circuit?

You can start by checking the cooling fan motor and relay for proper operation, inspecting the wiring for any damage or corrosion, and using a multimeter to test for continuity and resistance in the circuit components.

4. Can driving with OBDII code P1479 present in a Mazda cause further damage to the vehicle?

Continuing to drive with this code can potentially lead to engine overheating, which may cause serious damage to the engine components. It is recommended to address the issue promptly.

5. What are some repair tips for fixing OBDII code P1479 in a Mazda's cooling fan control circuit?

Repair tips may include replacing a faulty cooling fan motor or relay, repairing any damaged wiring, resetting the ECM, and clearing the trouble code to see if the issue persists.

6. Is it possible to reset OBDII code P1479 in a Mazda without addressing the underlying issue?

While clearing the trouble code may temporarily turn off the check engine light, the underlying problem causing the excessive current draw in the cooling fan control circuit will likely persist and trigger the code again.

7. How critical is it to address OBDII code P1479 in a Mazda promptly?

Addressing this code promptly is important to prevent potential engine overheating and damage. Ignoring the issue can lead to costly repairs in the long run.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1479 in a Mazda?

Depending on the specific cause, some DIY enthusiasts may be able to address this issue by following repair guides, using basic tools, and being cautious when working with electrical components.

9. Are there any preventive maintenance measures to avoid encountering OBDII code P1479 in a Mazda's cooling fan control circuit?

Regularly inspecting the cooling system components, ensuring proper cooling fan operation, and addressing any cooling system issues promptly can help prevent the occurrence of this trouble code.

10. How can a professional mechanic help in diagnosing and repairing OBDII code P1479 in a Mazda?

A professional mechanic can utilize specialized diagnostic tools, extensive experience, and technical knowledge to accurately diagnose the issue, recommend the appropriate repairs, and ensure proper functioning of the cooling fan control circuit.