AutoCodes – Ford – P1289 2006 Ford Fusion

P1289 2006 Ford Fusion Code - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range

Quick Answer

The Cylinder Head Temperature (CHT) Sensor is mounted into the wall of the cylinder head and is not connected to any coolant passages. Common causes include Wrong thermostat, Engine overheated, Low engine coolant level. 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: P1289 2006 Ford Fusion indicates Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range.
Common causes: Common causes include Wrong thermostat, Engine overheated, Low engine coolant level.
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 3,638

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 Aug 07, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1289 2006 Ford Fusion Description

The Cylinder Head Temperature (CHT) Sensor is mounted into the wall of the cylinder head and is not connected to any coolant passages. The CHT sends a signal to the Powertrain Control Module (PCM) indicating the cylinder head temperature. If the temperature exceeds 126°C (-258°F), the PCM disables four fuel injectors at a time. The PCM will alternate which four injectors are disabled every 32 engine cycles. The four cylinders that are not being fuel injected act as air pumps to aid in cooling the engine. If the temperature exceeds 154 °C (310°F), the PCM disables all of the fuel injectors until the engine temperature drops below 154°C (310°F).

OBDII Code P1289 2006 Ford Fusion - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range - AutoCodes.com — P1289 2006 Ford Fusion Code - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range

What does this mean?

What are the Possible Causes of the DTC P1289 2006 Ford Fusion?

Wrong thermostat
Engine overheated
Low engine coolant level
Faulty Cylinder Head Temperature (CHT) sensor
Cylinder Head Temperature (CHT) sensor harness is open or shorted
Cylinder Head Temperature (CHT) sensor circuit poor electrical connection

How to Fix the DTC P1289 2006 Ford Fusion?

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 P1289 2006 Ford Fusion 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 P1289 2006 Ford Fusion code?

Need more information on how to fix the P1289 2006 Ford Fusion code? Get Access to Factory Service Manuals

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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 P1289 2006 Ford Fusion Code

1. What does the OBDII code P1289 mean on a 2006 Ford Fusion?

P1289 indicates that the Cylinder Head Temperature (CHT) sensor is reporting a signal that is out of the expected range during a self-test, which could point to an overheating issue or a sensor malfunction.

2. What are the common symptoms of the P1289 code?

Symptoms may include the engine overheating, poor performance, a check engine light appearing, or the car entering a fail-safe or limp mode to prevent engine damage.

3. What causes the P1289 code on a 2006 Ford Fusion?

Common causes include a faulty CHT sensor, wiring issues such as damaged or corroded connectors, engine overheating, or a malfunctioning PCM (Powertrain Control Module).

4. How do I diagnose the P1289 code?

Start by checking the engine temperature and inspecting the CHT sensor for damage. Verify the wiring and connections to the sensor, and use a scan tool to monitor real-time sensor data.

5. Can I drive my 2006 Ford Fusion with the P1289 code?

It is not recommended to drive with this code, as it could indicate an engine overheating issue, which may lead to severe engine damage if not addressed promptly.

6. How do I fix the P1289 code?

Repairs may include replacing the CHT sensor, repairing or replacing damaged wiring or connectors, flushing the cooling system, or addressing any overheating problems.

7. Where is the Cylinder Head Temperature sensor located on a 2006 Ford Fusion?

The CHT sensor is typically located on the cylinder head, near the engine block. Consult the vehicle's repair manual for the exact location.

8. How much does it cost to repair the P1289 code?

The cost depends on the specific issue. Replacing the CHT sensor can cost $50â€“$150 for parts, plus labor. Wiring repairs or cooling system fixes may add to the cost.

9. Can a faulty thermostat cause the P1289 code?

Yes, a stuck thermostat can cause engine overheating, which might trigger the code. Inspect the thermostat as part of the diagnostic process.

10. Will resetting the check engine light fix the P1289 code?

Resetting the light may temporarily clear the code, but it will return if the underlying issue is not resolved. Proper diagnosis and repair are necessary.