AutoCodes – Ford – P1436 Ford

P1436 Ford Code - A/C Evaporator Air Temperature Circuit Low

Quick Answer

The A/C Evaporator Temperature (ACET) sensor contains a thermistor which receives a reference voltage from the Powertrain Control Module (PCM). Common causes include Faulty A/C Evaporator Temperature (ACET) Sensor, A/C Evaporator Temperature Sensor harness is open or shorted, A/C Evaporator Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P1436 Ford indicates A/C Evaporator Air Temperature Circuit Low.
Common causes: Common causes include Faulty A/C Evaporator Temperature (ACET) Sensor, A/C Evaporator Temperature Sensor harness is open or shorted, A/C Evaporator Temperature Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 3,978

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1436 Ford Description

The A/C Evaporator Temperature (ACET) sensor contains a thermistor which receives a reference voltage from the Powertrain Control Module (PCM). The thermistor then varies the resistance to the reference voltage based on the evaporator discharge air temperature. The resulting voltage is returned to the PCM where it is interpreted as an evaporator discharge air temperature reading.
The PCM maintains evaporator core temperature and prevents icing of the evaporator core, by disengaging the A/C compressor clutch (non-hybrid) or decreasing the electric A/C compressor speed (hybrid) when the evaporator A/C Evaporator Temperature sensor reading falls below acceptable levels, and by engaging the A/C compressor clutch (non-hybrid) or increasing the electric A/C compressor speed (hybrid) when the discharge air temperature rises above acceptable levels.
The A/C Evaporator Temperature sensor is located inside of the heater core and evaporator core housing in the air-stream leaving the evaporator core.
The Diagnostic Trouble Code (DTC) Indicates the ACET signal input is less than Self-Test minimum. The Self-Test minimum is 0.13 volts.

OBDII Code P1436 Ford - A/C Evaporator Air Temperature Circuit Low - AutoCodes.com — P1436 Ford Code - A/C Evaporator Air Temperature Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1436 Ford?

Faulty A/C Evaporator Temperature (ACET) Sensor
A/C Evaporator Temperature Sensor harness is open or shorted
A/C Evaporator Temperature Sensor circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1436 Ford?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1436 Ford 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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Information for Specific Ford Models

P1436 1997 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 1998 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 1999 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 2000 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 2001 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 2002 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 2003 Ford F150 — A/C Evaporator Air Temperature Circuit Low
P1436 2008 Ford Focus — A/C Evaporator Air Temperature Circuit Low
P1436 2006 Ford Fusion — A/C Evaporator Air Temperature Circuit Low
P1436 2007 Ford Fusion — A/C Evaporator Air Temperature Circuit Low
P1436 2009 Ford Fusion — A/C Evaporator Air Temperature Circuit Low
P1436 2010 Ford Fusion — A/C Evaporator Air Temperature Circuit Low
P1436 2011 Ford Fusion — A/C Evaporator Air Temperature Circuit Low
P1436 2012 Ford Fusion — A/C Evaporator Air Temperature Circuit Low

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 P1436 Ford Code

1. What are the common symptoms of OBDII code P1436 Ford related to the A/C Evaporator Air Temperature Circuit Low?

- Common symptoms include weak or inconsistent air conditioning performance, the inability to adjust interior temperature properly, and potential issues with defrosting.

2. What are the typical causes of OBDII code P1436 Ford indicating a problem with the A/C Evaporator Air Temperature Circuit Low?

- The code can be triggered by a faulty A/C evaporator temperature sensor, a damaged wiring harness, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code P1436 Ford for the A/C Evaporator Air Temperature Circuit Low?

- Use a diagnostic scanner to retrieve the trouble code, inspect the A/C evaporator temperature sensor and its wiring, and check for any loose connections or damaged components.

4. What are some potential repair tips for resolving OBDII code P1436 Ford associated with the A/C Evaporator Air Temperature Circuit Low?

- Repair options may include replacing the A/C evaporator temperature sensor, repairing or replacing damaged wiring, or reprogramming the control module if necessary.

5. Can OBDII code P1436 Ford for the A/C Evaporator Air Temperature Circuit Low be fixed without professional help?

- Depending on your automotive repair skills and access to tools, you may be able to address the issue yourself by following diagnostic procedures and making necessary repairs.

6. Are there any safety concerns associated with ignoring OBDII code P1436 Ford related to the A/C Evaporator Air Temperature Circuit Low?

- Ignoring the code can lead to continued issues with your vehicle's air conditioning system, potentially resulting in discomfort while driving or reduced visibility if defrosting is affected.

7. How can I prevent OBDII code P1436 Ford from reoccurring after repairing the A/C Evaporator Air Temperature Circuit Low issue?

- Regularly maintaining your vehicle's A/C system, checking for wiring damage, and promptly addressing any related trouble codes can help prevent the issue from happening again.

8. Is it safe to continue driving with OBDII code P1436 Ford indicating a problem with the A/C Evaporator Air Temperature Circuit Low?

- While driving with the code may not pose immediate danger, it is recommended to address the underlying issue promptly to ensure proper functionality of your vehicle's air conditioning system.

9. How long does it typically take to repair OBDII code P1436 Ford for the A/C Evaporator Air Temperature Circuit Low?

- The repair time can vary based on the specific cause of the issue, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem, depending on the complexity of the repair.

10. Can extreme weather conditions impact the likelihood of encountering OBDII code P1436 Ford related to the A/C Evaporator Air Temperature Circuit Low?

- Extreme heat or cold can potentially exacerbate existing issues with the A/C evaporator temperature sensor or wiring, increasing the chances of triggering the trouble code. Regular maintenance can help mitigate these risks.