AutoCodes – Ford – P1432 1999 Ford F150

P1432 1999 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 1999 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 1,741

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 1999 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 1999 Ford F150 - Thermostat Heater Control Circuit Failure - AutoCodes.com — P1432 1999 Ford F150 Code - Thermostat Heater Control Circuit Failure

What does this mean?

What are the Possible Causes of the DTC P1432 1999 Ford F150?

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

How to Fix the DTC P1432 1999 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 1999 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 1999 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 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P1432 on a 1999 Ford F150?

- Common symptoms include the engine running hotter or cooler than normal, poor fuel efficiency, and the check engine light illuminating.

2. What does OBDII code P1432 on a 1999 Ford F150 indicate?

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

3. What are the possible causes of OBDII code P1432 on a 1999 Ford F150?

- Possible causes include a faulty thermostat, damaged wiring or connectors in the heater circuit, or a malfunctioning thermostat heater control unit.

4. How can I diagnose OBDII code P1432 on my 1999 Ford F150?

- Diagnosing this code typically involves checking the thermostat operation, inspecting the heater circuit wiring and connections, and testing the thermostat heater control unit.

5. Can I drive my 1999 Ford F150 with OBDII code P1432?

- It is not recommended to drive the vehicle with this code present, as it can lead to overheating or other cooling system issues.

6. How do I repair OBDII code P1432 on a 1999 Ford F150?

- Repairing this code may involve replacing the thermostat, repairing any damaged wiring or connectors, or replacing the thermostat heater control unit.

7. Will OBDII code P1432 on a 1999 Ford F150 cause engine damage?

- If left unaddressed, this code can potentially cause engine damage due to overheating or improper cooling system function.

8. Can I reset OBDII code P1432 on my 1999 Ford F150 by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is recommended to diagnose and repair the underlying issue to prevent it from recurring.

9. How much does it typically cost to repair OBDII code P1432 on a 1999 Ford F150?

- The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $300 or more for parts and labor.

10. Is OBDII code P1432 a common issue in 1999 Ford F150 vehicles?

- While not extremely common, thermostat heater control circuit failures leading to this code can occur in 1999 Ford F150 models and should be addressed promptly to avoid potential engine problems.