P1437 2008 Ford Fusion 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 2008 Ford Fusion 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 2008 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 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 2008 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 P1437 2008 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 P1437 2008 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.
Need more information about the P1437 2008 Ford Fusion code?
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Frequently Asked Questions about P1437 2008 Ford Fusion Code
1. What are the common symptoms of OBDII code P1437 on a 2008 Ford Fusion related to the A/C Evaporator Air Temperature Circuit High?
- Common symptoms include poor A/C performance, warm air blowing from the vents, and the A/C system not cooling the cabin effectively.
2. What are the possible causes of OBDII code P1437 on a 2008 Ford Fusion?
- The code P1437 typically indicates an issue with the A/C evaporator air temperature sensor, a wiring problem, or a faulty A/C control module.
3. How can I diagnose the cause of OBDII code P1437 on my 2008 Ford Fusion?
- To diagnose the issue, you can use an OBDII scanner to retrieve the fault codes, visually inspect the wiring and connections related to the A/C evaporator air temperature sensor, and perform a resistance test on the sensor itself.
4. Can I still drive my 2008 Ford Fusion with OBDII code P1437?
- It is not recommended to drive with this code unresolved, as it can lead to further A/C system issues and discomfort while driving in hot weather.
5. How can I repair OBDII code P1437 on a 2008 Ford Fusion at home?
- Repairing this code may involve replacing the A/C evaporator air temperature sensor, repairing any damaged wiring, or resetting the A/C control module. It is recommended to have some automotive knowledge or seek professional help.
6. Will resetting the OBDII code P1437 on a 2008 Ford Fusion make it go away permanently?
- Resetting the code may temporarily clear it, but if the underlying issue causing the code is not addressed, it is likely to reappear after some time.
7. Is it safe to continue using the A/C in my 2008 Ford Fusion with OBDII code P1437?
- It is not advisable to continue using the A/C system until the issue causing the code is resolved, as it may lead to further damage to the A/C components.
8. How much does it typically cost to repair OBDII code P1437 on a 2008 Ford Fusion at a dealership?
- Repair costs can vary depending on the exact cause of the issue, but it may range from $200 to $500 or more at a dealership.
9. Can a DIY enthusiast with basic tools fix OBDII code P1437 on a 2008 Ford Fusion?
- Depending on the exact cause of the code, a DIY enthusiast with some automotive knowledge and basic tools may be able to address the issue themselves by following repair guides or seeking advice from online forums.
10. Will driving my 2008 Ford Fusion with OBDII code P1437 damage other components in the vehicle?
- Continuing to drive with this code unresolved may not only worsen the A/C system's performance but also potentially lead to damage to other related components over time.
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