P0537 2001 Ford F150 Code - A/C Evaporator Temperature Circuit Low Input
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 2001 Ford F150 indicates A/C Evaporator Temperature Circuit Low Input .
- 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 2001 Ford F150 Description
The PCM maintains evaporator core temperature and prevents icing of the evaporator core, by disengaging the A/C compressor clutch when the evaporator A/C Evaporator Temperature sensor reading falls below acceptable levels, and by engaging the A/C compressor clutch 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 2001 Ford F150?
- 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 2001 Ford F150?
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 2001 Ford F150 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 2001 Ford F150 Code
1. What does the OBDII code P0537 mean for a 2001 Ford F150?
P0537 indicates that the A/C Evaporator Temperature Sensor is reporting a low input voltage, which suggests a potential issue with the sensor or its circuit.
2. What are the common symptoms of code P0537 in a 2001 Ford F150?
Symptoms may include poor A/C performance, inconsistent cabin cooling, or the A/C system shutting off unexpectedly.
3. What causes the P0537 code to appear?
Common causes include a faulty A/C evaporator temperature sensor, damaged wiring or connectors in the circuit, or a malfunctioning PCM (Powertrain Control Module).
4. Can I still drive my 2001 Ford F150 with the P0537 code?
Yes, you can drive the vehicle, but the A/C system may not function properly, which could lead to discomfort in hot weather.
5. How do I diagnose the P0537 code on my Ford F150?
Start by inspecting the A/C evaporator temperature sensor, wiring, and connectors for damage or corrosion. Use a multimeter to check the sensor’s resistance and the wiring’s continuity.
6. How do I fix the P0537 code on a 2001 Ford F150?
Repairs may include replacing the A/C evaporator temperature sensor, repairing damaged wiring, or cleaning corroded connections in the circuit.
7. Where is the A/C evaporator temperature sensor located on a 2001 Ford F150?
The sensor is typically located near the evaporator core, which is inside the HVAC housing behind the dashboard.
8. What tools do I need to fix the P0537 code?
You’ll need a multimeter, basic hand tools, and possibly a scan tool to clear the code after repairs.
9. How much does it cost to repair the P0537 code on a 2001 Ford F150?
The cost depends on the specific repair, but replacing the A/C evaporator temperature sensor typically costs between $50 and $150 for parts and labor.
10. Will clearing the P0537 code fix the problem?
Clearing the code will reset the check engine light, but it won’t address the underlying issue. The problem must be diagnosed and repaired to prevent the code from returning.
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