P0537 2011 Ford Fusion Code - A/C Evaporator 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
- P0537 2011 Ford Fusion indicates A/C Evaporator 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.
Code P0537 2011 Ford Fusion 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 ACET signal input is less than Self-Test minimum. The Self-Test minimum is 0.13 volts.
What are the Possible Causes of the DTC P0537 2011 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 P0537 2011 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 P0537 2011 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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Frequently Asked Questions about P0537 2011 Ford Fusion Code
1. What does the OBDII code P0537 mean for a 2011 Ford Fusion?
Code P0537 indicates a problem with the A/C evaporator temperature circuit, specifically that the circuit is reading a low signal.
2. What are the common symptoms of P0537 in a 2011 Ford Fusion?
Common symptoms include the A/C system not working properly, inconsistent cabin cooling, or the A/C compressor failing to engage.
3. What causes the P0537 code to appear in a 2011 Ford Fusion?
Causes can include a faulty evaporator temperature sensor, damaged or corroded wiring, a poor electrical connection, or a malfunctioning A/C control module.
4. How do I diagnose the P0537 code on a 2011 Ford Fusion?
Use a multimeter to check the voltage and continuity of the evaporator temperature sensor circuit and inspect the wiring and connections for damage or corrosion.
5. Can I drive my 2011 Ford Fusion with the P0537 code?
Yes, but the A/C system may not function properly, which could lead to discomfort in hot weather or difficulty defogging windows.
6. How do I fix the P0537 code on a 2011 Ford Fusion?
Repairs may involve replacing the evaporator temperature sensor, repairing damaged wiring or connections, or recalibrating or replacing the A/C control module.
7. How much does it cost to fix the P0537 code on a 2011 Ford Fusion?
Repair costs vary but typically range from $100 to $300, depending on whether the sensor, wiring, or control module needs replacement.
8. Where is the A/C evaporator temperature sensor located on a 2011 Ford Fusion?
The sensor is located near the evaporator core inside the HVAC housing, which may require partial disassembly of the dashboard to access.
9. Can a low refrigerant level cause the P0537 code in a 2011 Ford Fusion?
While low refrigerant doesn't directly cause this code, it can create A/C system issues that might indirectly affect sensor readings.
10. Do I need specialized tools to fix the P0537 code on a 2011 Ford Fusion?
Basic tools like a multimeter are sufficient for diagnosis, but accessing the sensor may require specific tools for disassembling the dashboard or HVAC housing.
Discuss the causes and fixes for P0537 2011 Ford Fusion OBDII Code
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