Chrysler P1489 Error Code: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
Error Code
P1489
Brand
Chrysler
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
The P1489 error code in Chrysler vehicles indicates a problem with the high speed fan #1 control circuit. This means your vehicle's engine cooling fan may not be operating at high speed when needed, which can lead to engine overheating. The issue is typically caused by a faulty fan relay, blown fuse, damaged wiring, or a malfunctioning radiator fan motor.
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Tools You'll Need

How to Fix Error Code P1489

  1. Turn off engine and ensure safety

    Never work on a hot engine. The radiator and cooling system components can cause severe burns.
  2. Scan for additional codes

  3. Locate and inspect the cooling fan relay

  4. Test the fan relay

  5. Check the cooling fan fuses

  6. Test fan motor operation

    Be extremely careful when working near the fan blades. Keep hands and tools away from moving parts.
  7. Inspect wiring and connections

  8. Test PCM fan control signal

  9. Clear codes and test drive

Parts You May Need

Cooling fan relay
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Engine cooling fuses
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Radiator cooling fan motor
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Wiring harness connector
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Cooling fan relay
Check Price on Amazon
Engine cooling fuses
Check Price on Amazon
Radiator cooling fan motor
Check Price on Amazon
Wiring harness connector
Check Price on Amazon
Cooling fan relay
Check Price on Amazon
Engine cooling fuses
Check Price on Amazon
Radiator cooling fan motor
Check Price on Amazon
Wiring harness connector
Check Price on Amazon
Cooling fan relay
Check Price on Amazon
Engine cooling fuses
Check Price on Amazon
Radiator cooling fan motor
Check Price on Amazon
Wiring harness connector
Check Price on Amazon
Cooling fan relay
Check Price on Amazon
Engine cooling fuses
Check Price on Amazon
Radiator cooling fan motor
Check Price on Amazon
Wiring harness connector
Check Price on Amazon
Cooling fan relay
Check Price on Amazon
Engine cooling fuses
Check Price on Amazon
Radiator cooling fan motor
Check Price on Amazon
Wiring harness connector
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if the PCM is sending incorrect signals, if you're uncomfortable working with electrical systems, or if multiple cooling system components need replacement. Also seek professional help if the engine has overheated and may have sustained damage.

Frequently Asked Questions

Can I drive with P1489 error code?
You can drive short distances at low speeds, but avoid highway driving or stop-and-go traffic. The high speed fan may not engage when needed, risking engine overheating. Get it fixed as soon as possible.
How much does it cost to fix P1489?
Repair costs vary from $20 for a fuse or relay to $200-400 for a fan motor replacement. Most common fixes involving relays and fuses cost under $50. Labor costs depend on your location and the complexity of the repair.
Will P1489 cause my engine to overheat?
Yes, P1489 can cause overheating because the high speed cooling fan may not activate when needed. This is especially dangerous in hot weather, heavy traffic, or when towing. Monitor your temperature gauge closely.
What's the difference between high speed and low speed fan?
The low speed fan runs during normal driving to maintain optimal temperature. The high speed fan activates when extra cooling is needed, such as during idling, air conditioning use, or high engine loads.
Can a bad thermostat cause P1489?
While a stuck-open thermostat won't directly cause P1489, a stuck-closed thermostat can cause overheating that triggers the high speed fan circuit excessively, potentially leading to fan motor or relay failure over time.