AutoCodes – Generic – P1489

P1489 Code - High Speed Radiator Fan Control Relay Condition

Quick Answer

With the key on or engine running, system voltage over 10v, the Powertrain Control Module (PCM) detects a shorted or open condition in the high-speed Radiator Fan Relay circuit for 3 seconds. Common causes include Faulty Radiator Fan Control Relay, Radiator Fan Control Relay harness is open or shorted, Radiator Fan Control 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: P1489 indicates High Speed Radiator Fan Control Relay Condition.
Common causes: Common causes include Faulty Radiator Fan Control Relay, Radiator Fan Control Relay harness is open or shorted, Radiator Fan Control 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 10,996

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 Jul 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1489 Description

With the key on or engine running, system voltage over 10v, the Powertrain Control Module (PCM) detects a shorted or open condition in the high-speed Radiator Fan Relay circuit for 3 seconds. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media. The Diagnostic Trouble Code (DTC) will set when the Powertrain Control Module has detected an open or shorted condition in the radiator fan relay circuit.

OBDII Code P1489 - High Speed Radiator Fan Control Relay Condition - AutoCodes.com — P1489 Code - High Speed Radiator Fan Control Relay Condition

What does this mean?

What are the Possible Causes of the DTC P1489?

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

How to Fix the DTC P1489?

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 P1489 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 P1489 code?

Need more information on how to fix the P1489 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1489 Audi — EVAP Canister Purge Regulator Valve 2 Short To B+
P1489 Chrysler — High Speed Radiator Fan Control Relay Condition
P1489 Dodge — High Speed Radiator Fan Control Relay Condition
P1489 Ford — PCV Heater Control Circuit Fault
P1489 Jeep — High Speed Radiator Fan Control Relay Condition
P1489 Lincoln — PCV Heater Control Circuit Fault
P1489 Mercury — PCV Heater Control Circuit Fault
P1489 Mitsubishi — High Speed Radiator Fan Control Relay Condition
P1489 RAM — High Speed Radiator Fan Control Relay Condition
P1489 Volkswagen — EVAP Canister Purge Regulator Valve 2 Short To B+

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.