AutoCodes – Ford – P1436 2012 Ford Fusion

P1436 2012 Ford Fusion 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 2012 Ford Fusion 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 1,867

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 2012 Ford Fusion 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 2012 Ford Fusion - A/C Evaporator Air Temperature Circuit Low - AutoCodes.com — P1436 2012 Ford Fusion Code - A/C Evaporator Air Temperature Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1436 2012 Ford Fusion?

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 2012 Ford Fusion?

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 2012 Ford Fusion 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 P1436 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1436 in a 2012 Ford Fusion related to the A/C Evaporator Air Temperature Circuit Low?

- Common symptoms include weak or inconsistent airflow from the A/C vents, the A/C system not cooling effectively, and potential activation of the A/C compressor clutch at inappropriate times.

2. What are the possible causes of OBDII code P1436 in a 2012 Ford Fusion?

- Possible causes include a faulty A/C evaporator temperature sensor, damaged wiring or connectors in the A/C system, or an issue with the A/C control module.

3. How can I diagnose the A/C Evaporator Air Temperature Circuit Low issue in my 2012 Ford Fusion?

- To diagnose this issue, you can use an OBDII scanner to retrieve the specific trouble code (P1436), visually inspect the A/C system wiring and connections, and test the A/C evaporator temperature sensor for proper functionality.

4. Can I continue driving my 2012 Ford Fusion with the P1436 code related to the A/C Evaporator Air Temperature Circuit Low?

- It's generally not recommended to continue driving with this code unresolved, as it can lead to further A/C system issues and discomfort during hot weather.

5. How can I repair OBDII code P1436 in my 2012 Ford Fusion caused by the A/C Evaporator Air Temperature Circuit Low?

- The repair process typically involves replacing the faulty A/C evaporator temperature sensor, repairing any damaged wiring or connectors, and resetting the trouble code using an OBDII scanner.

6. Are there any DIY tips for addressing the A/C Evaporator Air Temperature Circuit Low issue in a 2012 Ford Fusion?

- While some basic troubleshooting steps can be taken, it's advisable to consult a professional mechanic for accurate diagnosis and repair of the A/C system to ensure proper functioning.

7. Will fixing the A/C Evaporator Air Temperature Circuit Low code improve the overall performance of my 2012 Ford Fusion's A/C system?

- Yes, resolving this issue should lead to improved A/C performance, consistent cooling, and better overall comfort while driving in hot weather conditions.

8. How long does it typically take to repair the A/C Evaporator Air Temperature Circuit Low issue in a 2012 Ford Fusion?

- The repair time can vary depending on the exact cause of the problem, but it usually takes a few hours to diagnose, replace components, and reset the trouble code.

9. Can extreme weather conditions or environmental factors trigger the A/C Evaporator Air Temperature Circuit Low code in a 2012 Ford Fusion?

- While extreme temperatures or humidity levels can sometimes affect the A/C system, the code is usually triggered by specific issues with the A/C evaporator temperature sensor or related components.

10. Is it necessary to clear the OBDII code P1436 after repairing the A/C Evaporator Air Temperature Circuit Low in a 2012 Ford Fusion?

- Yes, it's important to clear the trouble code using an OBDII scanner after completing the repair to ensure that the system recognizes the issue has been resolved and to prevent any further diagnostic confusion.