AutoCodes – Ford – P1289 2002 Ford F150

P1289 2002 Ford F150 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 2002 Ford F150 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 5,822

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1289 2002 Ford F150 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 2002 Ford F150 - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range - AutoCodes.com — P1289 2002 Ford F150 Code - Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range

What does this mean?

What are the Possible Causes of the DTC P1289 2002 Ford F150?

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 2002 Ford F150?

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 does this mean?

Code Tech Notes

Indicates a Cylinder Head Temperature (CHT) sensor circuit malfunction (open).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1289 2002 Ford F150 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 2002 Ford F150 code?

Need more information on how to fix the P1289 2002 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the 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 2002 Ford F150 Code

What are the common symptoms of OBDII code P1289 on a 2002 Ford F150?

Common symptoms include the Check Engine Light illuminating, engine running rough, loss of power, and potential overheating issues.

What can cause the OBDII code P1289 on a 2002 Ford F150?

The code P1289 typically indicates a problem with the Cylinder Head Temperature Sensor, which may be caused by a faulty sensor, wiring issues, or a problem with the engine's cooling system.

How serious is the OBDII code P1289 on a 2002 Ford F150?

While the code itself may not cause immediate harm to the vehicle, it is important to address the underlying issue to prevent potential engine damage due to overheating.

How can I diagnose the OBDII code P1289 on a 2002 Ford F150?

Diagnosis usually involves checking the Cylinder Head Temperature Sensor, inspecting the wiring for any damage, and testing the engine's cooling system to ensure proper operation.

Can I still drive my 2002 Ford F150 with the OBDII code P1289?

It is not recommended to continue driving the vehicle with the code P1289 present, as it can lead to engine overheating and potential damage if left unresolved.

How much does it typically cost to repair the OBDII code P1289 on a 2002 Ford F150?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the Cylinder Head Temperature Sensor, repairing wiring, or addressing cooling system problems. Costs can range from $100 to $300 or more.

Can I fix the OBDII code P1289 on a 2002 Ford F150 myself?

If you have experience with automotive repairs and diagnostics, you may be able to address the code P1289 yourself by replacing the Cylinder Head Temperature Sensor or fixing any wiring issues. Otherwise, it is recommended to seek professional help.

What are the potential risks of ignoring the OBDII code P1289 on a 2002 Ford F150?

Ignoring the code P1289 can lead to engine overheating, which may cause severe damage to the engine components and result in costly repairs or even engine failure if left untreated.

Are there any preventive measures I can take to avoid the OBDII code P1289 on my 2002 Ford F150?

Regular maintenance of the cooling system, checking for any signs of sensor or wiring issues, and addressing any engine performance issues promptly can help prevent the occurrence of the code P1289.