AutoCodes – Ford – P0597 2002 Ford F150

P0597 2002 Ford F150 Code - Thermostat Heater Control Circuit Failure

Quick Answer

The Engine Control Module (ECM) controls the Pulse Width Modulated (PWM) thermostat. Common causes include Failed Engine Cooling Thermostat, Engine Cooling Thermostat harness is open or shorted, Engine Cooling Thermostat circuit poor electrical connection. 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
P0597 2002 Ford F150 indicates Thermostat Heater Control Circuit Failure .
Common causes
Common causes include Failed Engine Cooling Thermostat, Engine Cooling Thermostat harness is open or shorted, Engine Cooling Thermostat circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,139
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 27, 2024
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Code P0597 2002 Ford F150 Description

The Engine Control Module (ECM) controls the Pulse Width Modulated (PWM) thermostat. The engine coolant thermostat heater controls coolant flow and regulates the engine operating temperature. The ECM supplies 12 V to the thermostat. The ECM controls the engine coolant thermostat heater by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.
OBDII Code P0597 2002 Ford F150 - Thermostat Heater Control Circuit Failure  - AutoCodes.com
P0597 2002 Ford F150 Code - Thermostat Heater Control Circuit Failure

What are the Possible Causes of the DTC P0597 2002 Ford F150?

  • Failed Engine Cooling Thermostat
  • Engine Cooling Thermostat harness is open or shorted
  • Engine Cooling Thermostat circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0597 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0597 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 P0597 2002 Ford F150 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 P0597 2002 Ford F150 Code

1. What does OBDII code P0597 mean on a 2002 Ford F150?

The code P0597 indicates a thermostat heater control circuit failure in the vehicle's cooling system.

2. What are the common symptoms of a P0597 code in a 2002 Ford F150?

Common symptoms include the engine running hotter or cooler than normal, poor fuel efficiency, and the Check Engine light being illuminated.

3. What can cause the P0597 code to appear on a 2002 Ford F150?

Potential causes of the P0597 code include a faulty thermostat, a malfunctioning thermostat heater, wiring issues, or a faulty cooling system temperature sensor.

4. How serious is a P0597 code on a 2002 Ford F150?

While the vehicle may still be driveable with this code, it is important to address the issue promptly to prevent overheating and potential engine damage.

5. How can I diagnose a P0597 code on my 2002 Ford F150?

Diagnosing a P0597 code typically involves checking the thermostat, thermostat heater, wiring connections, and temperature sensor for any faults or malfunctions.

6. Can I continue driving my 2002 Ford F150 with a P0597 code?

It is not recommended to drive the vehicle for an extended period with a P0597 code, as it can lead to overheating and potential damage to the engine.

7. How much does it cost to repair a P0597 code on a 2002 Ford F150?

The cost of repairing a P0597 code can vary depending on the specific issue causing the code and whether you perform the repairs yourself or take it to a mechanic.

8. Can I reset the P0597 code on my 2002 Ford F150?

You can reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reappearing.

9. Are there any DIY tips for fixing a P0597 code on a 2002 Ford F150?

DIY tips for fixing a P0597 code may include checking and replacing the thermostat, inspecting wiring connections, and ensuring the cooling system components are functioning properly.

10. How long does it take to repair a P0597 code on a 2002 Ford F150?

The repair time for a P0597 code can vary depending on the exact cause of the issue and your level of experience with automotive repairs.

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