P1489: High Speed Fan CTRL Relay Circuit Open Or Shorted

DODGE JEEP PLYMOUTH PONTIAC MITSUBISHI

Severity

Medium

System

Manufacturer-Specific Powertrain

Last reviewed: Jan 1, 0001 Last updated: Jan 1, 0001

Methodology: We combine code standards with complaint and reliability patterns, then review for clear, vehicle-first diagnosis steps.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What Does P1489 Mean?

P1489 is a manufacturer-specific diagnostic trouble code: High Speed Fan CTRL Relay Circuit Open Or Shorted. This code applies to DODGE, JEEP, PLYMOUTH, PONTIAC, MITSUBISHI vehicles. Unlike generic OBD-II codes, manufacturer-specific codes are defined by the vehicle maker and may only apply to certain makes and models.

Symptoms of P1489

⚠️ Check Engine Light (MIL) illuminated
⚠️ No signal from High Speed Fan CTRL Relay
⚠️ Related system defaulting to backup values
⚠️ Reduced engine performance

Common Causes

🔍 Broken wire in High Speed Fan CTRL Relay circuit
🔍 Disconnected High Speed Fan CTRL Relay electrical connector
🔍 High Speed Fan CTRL Relay internal open circuit failure
🔍 Corroded terminal pins preventing electrical contact

Frequently Asked Questions

What does P1489 mean?

P1489 indicates: High Speed Fan CTRL Relay Circuit Open Or Shorted. The vehicle's computer has detected that the High Speed Fan CTRL Relay is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code P1489?

You can drive short distances for essential trips, but schedule a diagnosis soon. Driving with P1489 for extended periods may cause additional problems.

How much does it cost to fix P1489?

Repair costs for P1489 typically range from $30 to $300, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Locate and repair broken wire in High Speed Fan CTRL Relay circuit
🔧 Replace damaged High Speed Fan CTRL Relay connector
🔧 Replace High Speed Fan CTRL Relay if internally open

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.