AutoCodes – Ford – P0537 2000 Ford F150

P0537 2000 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 2000 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.

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Code Popularity 1,603

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 P0537 2000 Ford F150 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 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.

OBDII Code P0537 2000 Ford F150 - A/C Evaporator Temperature Circuit Low Input - AutoCodes.com — P0537 2000 Ford F150 Code - A/C Evaporator Temperature Circuit Low Input

What does this mean?

What are the Possible Causes of the DTC P0537 2000 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 2000 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 2000 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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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 P0537 2000 Ford F150 Code

1. What are common symptoms of OBDII code P0537 in a 2000 Ford F150 related to the A/C Evaporator Temperature Circuit Low Input?

- Common symptoms include weak or warm air blowing from the A/C vents, the A/C system not cooling properly, and the A/C compressor not engaging.

2. What are the possible causes of OBDII code P0537 in a 2000 Ford F150?

- The code P0537 in a 2000 Ford F150 related to the A/C Evaporator Temperature Circuit Low Input can be caused by a faulty evaporator temperature sensor, wiring issues, or a defective A/C control module.

3. How can I diagnose the A/C Evaporator Temperature Circuit Low Input issue in a 2000 Ford F150?

- Diagnosis involves using a scan tool to read the code, checking the wiring and connectors for any damage, testing the evaporator temperature sensor, and verifying proper A/C system operation.

4. Can driving with the A/C Evaporator Temperature Circuit Low Input issue cause further damage to my 2000 Ford F150?

- Driving with this issue may not cause immediate damage, but it can lead to discomfort due to poor cooling performance and potential strain on other A/C components over time.

5. How can I repair OBDII code P0537 in a 2000 Ford F150 related to the A/C Evaporator Temperature Circuit Low Input?

- Repair involves replacing the faulty evaporator temperature sensor, repairing any damaged wiring connections, or addressing issues with the A/C control module as needed.

6. Is it safe to continue driving my 2000 Ford F150 with the A/C Evaporator Temperature Circuit Low Input code present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper A/C functionality and avoid potential discomfort in extreme weather conditions.

7. Can a DIY enthusiast fix the A/C Evaporator Temperature Circuit Low Input issue in a 2000 Ford F150?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to diagnose and repair this issue by following repair guides and procedures specific to the Ford F150 model.

8. How much can I expect to pay for repairing OBDII code P0537 in a 2000 Ford F150 at a mechanic or dealership?

- The cost of repairing this code can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor at a mechanic or dealership.

9. Are there any preventative measures to avoid OBDII code P0537 in a 2000 Ford F150 related to the A/C Evaporator Temperature Circuit Low Input?

- Regular maintenance of the A/C system, including checking refrigerant levels, can help prevent issues like P0537. Additionally, addressing any warning signs promptly can help avoid more severe issues.

10. How long does it typically take to repair OBDII code P0537 in a 2000 Ford F150 related to the A/C Evaporator Temperature Circuit Low Input?

- The repair time can vary based on the specific cause of the issue and the availability of parts. In general, it may take anywhere from 1 to 3 hours to diagnose and repair this code.