AutoCodes – Ford – P0597 2001 Ford F150

P0597 2001 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 2001 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.

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Code Popularity 1,947

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 May 27, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0597 2001 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 2001 Ford F150 - Thermostat Heater Control Circuit Failure - AutoCodes.com — P0597 2001 Ford F150 Code - Thermostat Heater Control Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P0597 2001 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 2001 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

If there are no coolant system leaks, replace the thermostat to fix the problem.
The Comprehensive component monitor (CCM) monitors the THTRC circuit to the Powertrain Control Module (PCM) for high and low voltage. If during testing; voltage was to fall below a calibrated limit for a calibrated amount of time the test will fail and set the DTC and MIL.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0597 2001 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.

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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 2001 Ford F150 Code

1. What are the common symptoms of OBDII code P0597 on a 2001 Ford F150?

The common symptoms of code P0597 include engine overheating, poor heater performance, and a lit Check Engine Light on the dashboard.

2. What does the OBDII code P0597 indicate on a 2001 Ford F150?

Code P0597 indicates a thermostat heater control circuit failure in the cooling system of the vehicle.

3. What are the possible causes of OBDII code P0597 on a 2001 Ford F150?

Possible causes of code P0597 include a faulty thermostat, damaged wiring or connectors in the thermostat heater circuit, or a malfunctioning thermostat heater control module.

4. How can I diagnose OBDII code P0597 on my 2001 Ford F150?

Diagnosing code P0597 involves using a scan tool to retrieve the code, inspecting the thermostat and its connections, checking the wiring for damage, and testing the thermostat heater control module.

5. Is it safe to continue driving with OBDII code P0597 on a 2001 Ford F150?

It is not recommended to drive with code P0597 as it can lead to engine overheating and potential damage. It is best to address the issue promptly to avoid further complications.

6. Can I repair OBDII code P0597 on a 2001 Ford F150 myself?

Depending on your automotive repair skills, you may be able to repair code P0597 yourself by replacing the faulty thermostat, repairing damaged wiring, or replacing the thermostat heater control module.

7. How much does it typically cost to repair OBDII code P0597 on a 2001 Ford F150?

The cost of repairing code P0597 can vary depending on the extent of the issue and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic. Costs may range from $100 to $300 or more.

8. Will resetting the Check Engine Light clear OBDII code P0597 on a 2001 Ford F150?

Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing code P0597 is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

9. How urgent is it to fix OBDII code P0597 on a 2001 Ford F150?

It is recommended to address code P0597 promptly to prevent potential engine overheating and damage. Ignoring the issue can lead to more severe problems and costly repairs in the long run.

10. Can OBDII code P0597 on a 2001 Ford F150 affect the vehicle's fuel efficiency?

Yes, code P0597 can impact the vehicle's fuel efficiency, as it can cause the engine to run inefficiently and potentially consume more fuel than usual. Addressing the issue can help improve fuel economy.