AutoCodes – Mercury – P0535 Mercury

P0535 Mercury Code - A/C Evaporator Temperature Sensor Circuit

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: P0535 Mercury indicates A/C Evaporator Temperature Sensor Circuit.
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 655

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 28, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0535 Mercury 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 A/C Evaporator Temperature sensor signal input is not to factory specifications.

OBDII Code P0535 Mercury - A/C Evaporator Temperature Sensor Circuit - AutoCodes.com — P0535 Mercury Code - A/C Evaporator Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC P0535 Mercury?

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 P0535 Mercury?

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 P0535 Mercury 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 P0535 Mercury code?

Need more information on how to fix the P0535 Mercury code? Get Access to Factory Service Manuals

Need Help with the 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 P0535 Mercury Code

1. What are the common symptoms of OBDII code P0535 in a Mercury related to the A/C Evaporator Temperature Sensor Circuit?

The common symptoms include incorrect A/C system operation, irregular cooling, or inconsistent temperature control inside the vehicle.

2. What are the possible causes of OBDII code P0535 in a Mercury associated with the A/C Evaporator Temperature Sensor Circuit?

Potential causes may involve a faulty evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue with the A/C control module.

3. How can I diagnose OBDII code P0535 in a Mercury regarding the A/C Evaporator Temperature Sensor Circuit?

Diagnosis typically involves using a scan tool to retrieve the specific trouble code, testing the evaporator temperature sensor for proper function, and inspecting the sensor circuit for any wiring or connector issues.

4. Can I still drive my Mercury with OBDII code P0535 related to the A/C Evaporator Temperature Sensor Circuit?

It is not recommended to drive the vehicle with this issue as it can lead to further A/C system malfunctions or discomfort while driving due to improper temperature regulation.

5. How can I repair OBDII code P0535 in a Mercury associated with the A/C Evaporator Temperature Sensor Circuit?

Repairing the issue may involve replacing the faulty evaporator temperature sensor, repairing or replacing damaged wiring or connectors, or resetting the A/C control module after addressing the problem.

6. Are there any DIY tips for addressing OBDII code P0535 in a Mercury related to the A/C Evaporator Temperature Sensor Circuit?

While some basic diagnostics can be performed by DIY enthusiasts, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair of this specific issue.

7. What role does the A/C Evaporator Temperature Sensor play in the overall functionality of the A/C system in a Mercury?

The A/C Evaporator Temperature Sensor helps regulate the temperature inside the vehicle by providing feedback to the A/C control module, ensuring proper cooling and comfort for the occupants.

8. Can extreme weather conditions affect the likelihood of encountering OBDII code P0535 in a Mercury?

Extreme temperatures or environmental conditions can sometimes impact the performance of the A/C system and its components, potentially leading to issues like OBDII code P0535 related to the A/C Evaporator Temperature Sensor Circuit.

9. How long does it typically take to repair OBDII code P0535 in a Mercury associated with the A/C Evaporator Temperature Sensor Circuit?

The repair time can vary depending on the exact cause of the issue, but it may take anywhere from a few hours to half a day to diagnose and repair the problem successfully.

10. Is it important to address OBDII code P0535 in a Mercury promptly, or can it be left unattended for a while?

It is essential to address the issue promptly to prevent further damage to the A/C system and ensure optimal comfort and functionality while driving your Mercury.