AutoCodes – Subaru – P1500 Subaru

P1500 Subaru Code - Radiator Fan Relay 1 Circuit Malfunction

Quick Answer

P1500 Subaru indicates Radiator Fan Relay 1 Circuit Malfunction. Common causes include Faulty Radiator Fan Relay, Radiator Fan Relay harness is open or shorted, Radiator Fan Relay 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: P1500 Subaru indicates Radiator Fan Relay 1 Circuit Malfunction.
Common causes: Common causes include Faulty Radiator Fan Relay, Radiator Fan Relay harness is open or shorted, Radiator Fan Relay 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 6,738

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 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1500 Subaru Description

OBDII Code P1500 Subaru - Radiator Fan Relay 1 Circuit Malfunction - AutoCodes.com — P1500 Subaru Code - Radiator Fan Relay 1 Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P1500 Subaru?

Faulty Radiator Fan Relay
Radiator Fan Relay harness is open or shorted
Radiator Fan Relay poor electrical connection

How to Fix the DTC P1500 Subaru?

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 P1500 Subaru 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.

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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 P1500 Subaru Code

1. What does the OBDII code P1500 indicate on a Subaru?

- The OBDII code P1500 for a Subaru indicates a malfunction in the Radiator Fan Relay 1 Circuit. This means there is an electrical issue preventing the radiator fan from operating correctly.

2. What are the common symptoms of code P1500 in a Subaru?

- Common symptoms include the engine overheating, the radiator fan not activating when the engine reaches operating temperature, and possibly an illuminated check engine light.

3. What can cause the P1500 code to appear on my Subaru?

- Causes of the P1500 code can include a faulty radiator fan relay, damaged wiring or connectors in the fan circuit, or a problem with the engine control module (ECM) itself.

4. How can I diagnose the P1500 code in my Subaru?

- Diagnosing the P1500 code involves checking the radiator fan relay for damage or failure, inspecting the wiring and connectors for breaks or shorts, and testing the radiator fan to ensure it operates when power is directly applied.

5. What are the steps to fix the P1500 code on a Subaru?

- To fix the P1500 code, replace the faulty radiator fan relay, repair any damaged wiring or connectors, and if necessary, replace the radiator fan itself if it fails to operate when tested.

6. Is it safe to drive my Subaru with the P1500 code?

- Driving with the P1500 code is not recommended as it can lead to the engine overheating, which might cause significant damage if not addressed promptly.

7. How urgent is it to address the P1500 code in a Subaru?

- It is fairly urgent to address the P1500 code because allowing the vehicle to continue operating with an ineffective cooling system can quickly lead to engine overheating and potential engine damage.

8. Can a faulty radiator fan relay affect the performance of my Subaruâ€™s air conditioning system?

- Yes, a faulty radiator fan relay can affect the performance of the air conditioning system since the radiator fan helps to dissipate heat from the refrigerant and maintain the efficiency of the AC system.

9. What tools are needed to diagnose and repair the P1500 code on a Subaru?

- Tools needed may include a multimeter for electrical testing, basic hand tools for replacing the relay or repairing connections, and possibly a scan tool to clear the diagnostic trouble code from the ECM after repairs.

10. How can I prevent the P1500 code from recurring in my Subaru?

- Preventing the P1500 code involves regular maintenance checks on the cooling system, ensuring that all electrical connections are clean and secure, and replacing the radiator fan relay and other components as they show signs of wear or damage.