P1437 2003 Ford F150 Code - A/C Evaporator Air Temperature Circuit High
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
- P1437 2003 Ford F150 indicates A/C Evaporator Air Temperature Circuit High.
- 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 P1437 2003 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 A/C Evaporator Temperature sensor signal input is greater than Self-Test minimum. Self-Test maximum is 4.5 volts.
What are the Possible Causes of the DTC P1437 2003 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 P1437 2003 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 P1437 2003 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 P1437 2003 Ford F150 Code
1. What are the common symptoms of OBDII code P1437 on a 2003 Ford F150 related to the A/C Evaporator Air Temperature Circuit High?
The common symptoms include poor air conditioning performance, warm air coming from the vents, and the A/C system not cooling properly.
2. What are the possible causes of OBDII code P1437 on a 2003 Ford F150?
The code P1437 may be triggered by issues such as a faulty A/C evaporator temperature sensor, a wiring issue in the circuit, or a problem with the A/C control module.
3. How can I diagnose the A/C Evaporator Air Temperature Circuit High issue on my 2003 Ford F150?
Diagnosis involves using an OBDII scanner to retrieve the trouble code, checking the A/C system components for visible damage, and testing the A/C evaporator temperature sensor for proper operation.
4. Can I still drive my 2003 Ford F150 with the A/C Evaporator Air Temperature Circuit High issue?
While it is technically possible to drive with this issue, it is not recommended as it can lead to discomfort due to poor cooling performance and potential damage to the A/C system components.
5. How can I repair OBDII code P1437 on my 2003 Ford F150 myself?
Repair options include replacing the faulty A/C evaporator temperature sensor, repairing any damaged wiring in the circuit, or resetting the code after addressing the root cause of the problem.
6. Is it safe to reset the trouble code P1437 on a 2003 Ford F150 without fixing the underlying issue?
Resetting the code without addressing the root cause can lead to recurring problems with the A/C system and may not resolve the issue permanently.
7. Will OBDII code P1437 on a 2003 Ford F150 cause any long-term damage if left untreated?
Leaving the issue unresolved can potentially lead to further damage to the A/C system components and may result in more costly repairs down the line.
8. How much does it typically cost to repair OBDII code P1437 on a 2003 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 may range from $100 to $300 or more, including parts and labor.
9. Are there any preventive measures I can take to avoid encountering OBDII code P1437 on my 2003 Ford F150 in the future?
Regular maintenance of the A/C system, such as checking for refrigerant leaks and ensuring proper airflow, can help prevent issues like the A/C Evaporator Air Temperature Circuit High code.
10. Can extreme weather conditions or driving habits contribute to triggering OBDII code P1437 on a 2003 Ford F150?
Yes, extreme heat or cold temperatures, as well as frequent use of the A/C system, can potentially contribute to triggering this code, especially if the A/C components are under strain.
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