AutoCodes – Ford – P1289 2007 Ford Fusion

P1289 2007 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 2007 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 3,728

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 2007 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 2007 Ford Fusion - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range - AutoCodes.com — P1289 2007 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 2007 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 2007 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 2007 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 2007 Ford Fusion code?

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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 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P1289 on a 2007 Ford Fusion?

- Common symptoms include engine overheating, rough idling, decreased fuel efficiency, and potential stalling.

2. What does the OBDII code P1289 on a 2007 Ford Fusion mean?

- The code indicates that the Cylinder Head Temperature Sensor signal is registering a temperature reading that is higher than the self-test range allowed by the vehicle's computer.

3. What are the possible causes of OBDII code P1289 on a 2007 Ford Fusion?

- Possible causes include a faulty Cylinder Head Temperature Sensor, wiring issues, a problem with the sensor's connector, or issues with the engine's cooling system.

4. How can I diagnose the OBDII code P1289 on my 2007 Ford Fusion?

- Diagnosis typically involves checking the Cylinder Head Temperature Sensor's wiring and connector for damage, testing the sensor itself, and inspecting the engine's cooling system for any issues.

5. What are the repair options for OBDII code P1289 on a 2007 Ford Fusion?

- Repairs may involve replacing the Cylinder Head Temperature Sensor, repairing any damaged wiring or connectors, or addressing any underlying cooling system problems.

6. Can I drive my 2007 Ford Fusion with OBDII code P1289?

- It is not recommended to drive the vehicle with this code as it can lead to potential engine damage due to overheating or incorrect temperature readings.

7. How urgent is it to address OBDII code P1289 on a 2007 Ford Fusion?

- It is important to address this code promptly to prevent further damage to the engine and ensure the vehicle operates correctly.

8. Can a DIY enthusiast fix OBDII code P1289 on a 2007 Ford Fusion?

- Depending on the individual's skill level, it is possible to address this code as long as they have the necessary tools and knowledge to diagnose and repair the issue.

9. Will resetting the OBDII code P1289 on a 2007 Ford Fusion make it go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear after some time.

10. How much does it cost to repair OBDII code P1289 on a 2007 Ford Fusion?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve sensor replacement, wiring repairs, or cooling system maintenance, which can range from a few hundred to over a thousand dollars.