P0536 Mercury Code - A/C Evaporator Temperature Circuit Range/Performance
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
- P0536 Mercury indicates A/C Evaporator Temperature Circuit Range/Performance.
- 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.
Code P0536 Mercury Description
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.
What are the Possible Causes of the DTC P0536 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 P0536 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 P0536 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 P0536 Mercury code?
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Frequently Asked Questions about P0536 Mercury Code
1. What are common symptoms of OBDII code P0536 in a Mercury related to the A/C evaporator temperature circuit?
- Common symptoms include erratic A/C operation, lack of cooling, and the A/C system not functioning properly.
2. What are possible causes of OBDII code P0536 in a Mercury indicating A/C evaporator temperature circuit range/performance issues?
- Possible causes include a faulty A/C evaporator temperature sensor, damaged wiring or connectors, or a malfunctioning climate control module.
3. How can I diagnose the A/C evaporator temperature sensor in a Mercury to troubleshoot OBDII code P0536?
- Use a multimeter to test the sensor's resistance values at different temperatures, ensuring they match the manufacturer's specifications.
4. What repair tips can help resolve OBDII code P0536 in a Mercury related to the A/C evaporator temperature circuit?
- Check for any damaged or corroded wiring connections, replace the A/C evaporator temperature sensor if faulty, and reset the trouble code after repairs.
5. Can a DIY enthusiast address OBDII code P0536 in a Mercury on their own?
- Yes, if comfortable working with automotive electrical systems and diagnostics. However, professional assistance may be required for complex issues.
6. How important is it to address OBDII code P0536 in a Mercury indicating A/C evaporator temperature circuit problems?
- It is crucial to address this issue promptly to ensure proper functioning of the A/C system and prevent potential damage to other components.
7. Are there any precautions to keep in mind when working on the A/C evaporator temperature circuit in a Mercury?
- Disconnect the vehicle's battery before starting any electrical work, and handle sensitive components with care to prevent further damage.
8. Is resetting the OBDII system necessary after resolving code P0536 in a Mercury?
- Yes, resetting the OBDII system will clear the trouble code and allow the vehicle to monitor the A/C evaporator temperature circuit for any new issues.
9. Can extreme temperatures or environmental factors trigger OBDII code P0536 in a Mercury?
- Yes, extreme heat or cold conditions can impact the A/C system's performance, potentially leading to the triggering of code P0536.
10. How can regular maintenance help prevent OBDII code P0536 from recurring in a Mercury?
- Regular maintenance, including checking the A/C system for leaks and ensuring proper refrigerant levels, can help prevent issues that may trigger code P0536.
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