AutoCodes – Ford – P1432 2003 Ford F150

P1432 2003 Ford F150 Code - Thermostat Heater Control Circuit Failure

Quick Answer

Thermostat Heater Control (THTRC) Circuit Failure. Common causes include Faulty Thermostat Heater, Thermostat Heater harness is open or shorted, Thermostat Heater 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: P1432 2003 Ford F150 indicates Thermostat Heater Control Circuit Failure.
Common causes: Common causes include Faulty Thermostat Heater, Thermostat Heater harness is open or shorted, Thermostat Heater 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 2,763

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1432 2003 Ford F150 Description

Thermostat Heater Control (THTRC) Circuit Failure. The Comprehensive Component Monitor (CCM) monitors the THTRC circuit to the Powertrain Control Module (PCM) for high and low voltage.

OBDII Code P1432 2003 Ford F150 - Thermostat Heater Control Circuit Failure - AutoCodes.com — P1432 2003 Ford F150 Code - Thermostat Heater Control Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P1432 2003 Ford F150?

Faulty Thermostat Heater
Thermostat Heater harness is open or shorted
Thermostat Heater circuit poor electrical connection

How to Fix the DTC P1432 2003 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

The Comprehensive component monitor (CCM) monitors the THTRC circuit to the 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 P1432 2003 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 P1432 2003 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 P1432 2003 Ford F150 Code

1. What are the common symptoms of OBDII code P1432 on a 2003 Ford F150?

- Common symptoms include the engine running hotter or colder than normal, poor fuel efficiency, and a check engine light illuminated on the dashboard.

2. What does the OBDII code P1432 indicate on a 2003 Ford F150?

- OBDII code P1432 specifically points to a thermostat heater control circuit failure in the vehicle.

3. What are the possible causes of OBDII code P1432 on a 2003 Ford F150?

- Possible causes include a faulty thermostat, a malfunctioning thermostat heater control circuit, wiring issues, or a defective engine coolant temperature sensor.

4. How can I diagnose the OBDII code P1432 on my 2003 Ford F150?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the thermostat and related components for faults, and testing the thermostat heater control circuit for continuity.

5. Can I continue driving my 2003 Ford F150 with OBDII code P1432 present?

- It is not recommended to drive the vehicle with this code as it can lead to engine overheating or other related issues. It's best to address the problem promptly.

6. Is it safe to reset the OBDII code P1432 on a 2003 Ford F150 without fixing the underlying issue?

- Resetting the code without fixing the root cause may temporarily turn off the check engine light, but the problem will likely reoccur. It's important to address the underlying issue to prevent further damage.

7. How much does it typically cost to repair OBDII code P1432 on a 2003 Ford F150?

- The cost of repair can vary depending on the cause of the issue, but it may involve replacing the thermostat, fixing wiring problems, or replacing the engine coolant temperature sensor. Costs can range from around $100 to $300 or more.

8. Can I fix OBDII code P1432 on a 2003 Ford F150 myself?

- If you have the necessary tools, knowledge, and experience, you may be able to fix the issue yourself. However, it's recommended to consult a professional mechanic for proper diagnosis and repair to ensure the problem is resolved correctly.

9. Will OBDII code P1432 cause my 2003 Ford F150 to fail an emissions test?

- Yes, the presence of this code can indicate an issue with the vehicle's emissions system, which may cause it to fail an emissions test. It's important to address and resolve the problem before undergoing an emissions test.

10. How long does it take to repair OBDII code P1432 on a 2003 Ford F150?

- The repair time can vary depending on the specific cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the thermostat heater control circuit failure.