P0537 2006 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 2006 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 2006 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 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 P0537 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 P0537 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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Frequently Asked Questions about P0537 2006 Ford Fusion Code
1. What does the OBDII code P0537 mean on a 2006 Ford Fusion?
The P0537 code indicates an issue with the A/C evaporator temperature sensor circuit, specifically registering a low voltage condition.
2. What are the symptoms of the P0537 code in a 2006 Ford Fusion?
Symptoms may include poor A/C performance, the A/C not blowing cold air, or the A/C system shutting off intermittently.
3. What causes the P0537 code to appear in a 2006 Ford Fusion?
Common causes include a faulty A/C evaporator temperature sensor, damaged or corroded wiring, a loose connection in the sensor circuit, or a malfunctioning HVAC control module.
4. Can I drive my 2006 Ford Fusion with the P0537 code?
Yes, but the A/C system may not work as intended, and ignoring the issue could lead to further damage to the HVAC system over time.
5. How do I diagnose the P0537 code on a 2006 Ford Fusion?
Start by inspecting the A/C evaporator temperature sensor and its wiring for damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit.
6. How do I fix the P0537 code on a 2006 Ford Fusion?
Repairs might include replacing the A/C evaporator temperature sensor, repairing damaged wiring, cleaning corroded connections, or reprogramming or replacing the HVAC control module.
7. Where is the A/C evaporator temperature sensor located on a 2006 Ford Fusion?
The sensor is typically located near the evaporator core within the HVAC housing, which may require partial disassembly of the dashboard to access.
8. How much does it cost to repair the P0537 code on a 2006 Ford Fusion?
Repair costs vary but typically range from $100 to $300, depending on whether the sensor, wiring, or HVAC module needs repair or replacement.
9. Can a failing A/C evaporator temperature sensor cause other problems?
Yes, a failing sensor can disrupt the A/C system’s performance and may lead to compressor damage if the issue is not addressed.
10. Do I need professional help to fix the P0537 code on a 2006 Ford Fusion?
If you’re comfortable working with automotive electronics, you can attempt the repair yourself. Otherwise, it’s best to consult a certified mechanic for accurate diagnosis and repair.
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