AutoCodes – Ford – P1436 2006 Ford Fusion

P1436 2006 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 2006 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 1,591

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 2006 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 2006 Ford Fusion - A/C Evaporator Air Temperature Circuit Low - AutoCodes.com — P1436 2006 Ford Fusion Code - A/C Evaporator Air Temperature Circuit Low

What does this mean?

What are the Possible Causes of the DTC P1436 2006 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 2006 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 2006 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 2006 Ford Fusion Code

1. What are the common symptoms of OBDII code P1436 on a 2006 Ford Fusion related to the A/C Evaporator Air Temperature Circuit Low?

- The common symptoms include weak or no cooling from the air conditioning system, inconsistent temperature control, and the A/C compressor cycling on and off frequently.

2. What are the possible causes of OBDII code P1436 on a 2006 Ford Fusion?

- The code P1436 can be triggered by issues such as a faulty A/C evaporator air temperature sensor, damaged wiring or connectors in the circuit, or a malfunctioning HVAC control module.

3. How can I diagnose the A/C Evaporator Air Temperature Circuit Low issue on a 2006 Ford Fusion?

- You can start by using an OBDII scanner to retrieve the specific fault code. Then, inspect the sensor and its wiring for any visible damage. Testing the sensor's resistance and checking for proper voltage signals can help pinpoint the issue.

4. Are there any quick checks I can perform to troubleshoot OBDII code P1436 on my 2006 Ford Fusion?

- Yes, you can begin by checking the A/C system's refrigerant levels, ensuring the A/C compressor engages properly, and verifying that the A/C fan functions correctly. These checks can rule out potential related problems.

5. Is it safe to continue driving my 2006 Ford Fusion with OBDII code P1436 related to the A/C Evaporator Air Temperature Circuit Low?

- It is generally safe to drive, but you may experience discomfort due to inadequate cooling. However, it is advisable to address the issue promptly to prevent further damage to the A/C system.

6. Can I reset OBDII code P1436 on my 2006 Ford Fusion without fixing the underlying issue?

- While you can clear the fault code with an OBDII scanner, it is essential to address the root cause of the problem to ensure proper functioning of the A/C system and prevent the code from reappearing.

7. How much does it typically cost to repair OBDII code P1436 on a 2006 Ford Fusion at a dealership or a repair shop?

- The cost of repair can vary depending on the exact cause of the issue. Repairs may involve replacing the A/C evaporator air temperature sensor, repairing wiring, or reprogramming the HVAC control module. Costs can range from $100 to $500 or more.

8. Can I fix OBDII code P1436 on my 2006 Ford Fusion myself, or should I seek professional help?

- If you have experience with automotive electrical systems and access to the necessary tools, you may attempt to diagnose and repair the issue yourself. However, if you are unsure or unfamiliar with such repairs, it is recommended to consult a professional mechanic.

9. Will OBDII code P1436 on a 2006 Ford Fusion cause any long-term damage if left untreated?

- Ignoring the A/C Evaporator Air Temperature Circuit Low issue may lead to reduced A/C performance, increased wear on other A/C components, and potential discomfort for passengers. It is best to address the problem promptly to prevent further complications.

10. How can I prevent OBDII code P1436 from appearing on my 2006 Ford Fusion in the future?

- Regular maintenance of the A/C system, including checking for leaks, ensuring proper refrigerant levels, and inspecting sensor connections, can help prevent issues like code P1436. Additionally, addressing any detected problems promptly can help maintain A/C system health.