AutoCodes – Ford – P1289 Ford

P1289 Ford 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 Ford 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 117,095

How popular is this code, among other codes? Medium

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

What does this mean?

What are the Possible Causes of the DTC P1289 Ford?

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 Ford?

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 Ford 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 Ford code?

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

Need Help with the Code?

Get the P1289 Ford code diagnosed by a professional: Find a repair shop in your area

Information for Specific Ford Models

P1289 1997 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 1998 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 1999 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2000 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2001 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2002 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2003 Ford F150 — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2006 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2007 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2008 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2009 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2010 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2011 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range
P1289 2012 Ford Fusion — Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range

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 Ford Code

1. What are the common symptoms of OBDII code P1289 in a Ford vehicle?

The common symptoms of OBDII code P1289 include engine overheating, rough idling, poor fuel efficiency, and potential engine misfires.

2. What does the OBDII code P1289 indicate in a Ford vehicle?

OBDII code P1289 in a Ford vehicle indicates that the Cylinder Head Temperature Sensor signal is greater than the self-test range, signaling a potential issue with the sensor or its circuit.

3. What are the possible causes of OBDII code P1289 in a Ford vehicle?

Possible causes of OBDII code P1289 in a Ford vehicle include a faulty Cylinder Head Temperature Sensor, damaged sensor wiring or connectors, a malfunctioning PCM, or issues with the cooling system.

4. How can I diagnose the OBDII code P1289 in my Ford vehicle?

To diagnose OBDII code P1289, you can use an OBDII scanner to retrieve the fault code and inspect the Cylinder Head Temperature Sensor, its wiring, and connectors for any visible damage or corrosion.

5. How can I repair OBDII code P1289 in my Ford vehicle?

Repairing OBDII code P1289 in a Ford vehicle may involve replacing the faulty Cylinder Head Temperature Sensor, repairing damaged wiring or connectors, resetting the PCM, or addressing any underlying cooling system issues.

6. Can I continue to drive my Ford vehicle with OBDII code P1289?

It is not recommended to drive your Ford vehicle with OBDII code P1289, as it can lead to engine overheating, potential damage, and reduced performance. It's best to address the issue promptly.

7. How much does it cost to repair OBDII code P1289 in a Ford vehicle?

The cost to repair OBDII code P1289 in a Ford vehicle can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.

8. Can a DIY enthusiast fix OBDII code P1289 in a Ford vehicle?

Depending on your skill level and access to tools, a DIY enthusiast may be able to fix OBDII code P1289 by replacing the Cylinder Head Temperature Sensor or addressing any wiring issues. However, more complex repairs may require professional assistance.

9. How long does it take to repair OBDII code P1289 in a Ford vehicle?

The time it takes to repair OBDII code P1289 in a Ford vehicle can vary based on the extent of the issue and the repair method chosen. Simple sensor replacement may take an hour or two, while more involved repairs could take longer.

10. Is OBDII code P1289 a common issue in Ford vehicles?

OBDII code P1289 related to the Cylinder Head Temperature Sensor is not uncommon in Ford vehicles, especially in older models or those with high mileage. Regular maintenance and prompt attention to any warning lights can help prevent this issue.