P1437 1999 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 1999 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 1999 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 1999 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 1999 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 1999 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 1999 Ford F150 Code
1. What are the common symptoms of OBDII code P1437 in a 1999 Ford F150?
- Common symptoms include poor air conditioning performance, warm air blowing from vents, and possible illumination of the Check Engine light.
2. What does the OBDII code P1437 for a 1999 Ford F150 indicate?
- The code P1437 indicates a fault with the A/C Evaporator Air Temperature Circuit High in the vehicle.
3. What are the potential causes of OBDII code P1437 in a 1999 Ford F150?
- Possible causes include a malfunctioning temperature sensor, wiring issues, a faulty connector, or a problem with the air conditioning system.
4. How can I diagnose the A/C Evaporator Air Temperature Circuit High issue in my 1999 Ford F150?
- Diagnose by using an OBDII scanner to retrieve the specific fault code, inspecting the temperature sensor and its wiring, and checking for any loose connections.
5. Can I still drive my 1999 Ford F150 with OBDII code P1437?
- It is not recommended to drive for an extended period with this issue, as it may lead to poor A/C performance and discomfort while driving.
6. What are some repair tips for fixing OBDII code P1437 in a 1999 Ford F150?
- Repair tips include checking and replacing the temperature sensor, repairing any damaged wiring, ensuring proper connections, and resetting the fault code after repairs.
7. Is it necessary to visit a mechanic for OBDII code P1437 in a 1999 Ford F150?
- While some DIY enthusiasts may be able to troubleshoot and repair the issue, consulting a mechanic is recommended for accurate diagnosis and proper repair.
8. How much does it typically cost to fix OBDII code P1437 in a 1999 Ford F150?
- The cost of repairs can vary based on the specific issue, but it may involve replacing a faulty sensor, repairing wiring, or addressing other related components.
9. Can OBDII code P1437 in a 1999 Ford F150 cause any other problems if left untreated?
- Ignoring the issue may lead to continued poor A/C performance, discomfort in hot weather, and potential strain on other A/C components over time.
10. How can I prevent OBDII code P1437 from occurring in my 1999 Ford F150 in the future?
- Regular maintenance of the A/C system, checking for any signs of issues, and addressing them promptly can help prevent the recurrence of this fault code.
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