P1437 2006 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 2006 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 2006 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 2006 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 2006 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 2006 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 2006 Ford Fusion code?
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Frequently Asked Questions about P1437 2006 Ford Fusion Code
What does the OBDII code P1437 mean on a 2006 Ford Fusion?
P1437 indicates an issue with the A/C evaporator air temperature sensor circuit, specifically that the circuit voltage is higher than expected.
What are the common symptoms of the P1437 code in a 2006 Ford Fusion?
Symptoms may include reduced or inconsistent A/C performance, the A/C blowing warm air, and an illuminated check engine light.
What causes the P1437 code to appear?
Common causes include a faulty A/C evaporator air temperature sensor, damaged wiring or connectors, or a malfunctioning HVAC control module.
Can I still drive my 2006 Ford Fusion with the P1437 code?
Yes, but the A/C system may not function properly, leading to discomfort in hot weather. Prolonged issues might also stress other HVAC components.
How do I diagnose the P1437 code on my Ford Fusion?
Start by inspecting the wiring and connectors for damage or corrosion, then test the A/C evaporator air temperature sensor for proper resistance or voltage.
How can I fix the P1437 code on a 2006 Ford Fusion?
Repairs may involve replacing the A/C evaporator air temperature sensor, repairing damaged wiring, or reprogramming the HVAC control module if necessary.
Is replacing the A/C evaporator air temperature sensor difficult?
Replacing the sensor can be challenging as it is located within the HVAC system, often requiring partial disassembly of the dashboard.
How much does it cost to repair a P1437 code?
Repair costs vary but typically range from $100 to $300, depending on whether just the sensor needs replacement or additional wiring repairs are required.
Can a P1437 code cause damage to other components?
While it doesn't directly harm other components, prolonged issues with the A/C system might lead to stress on the compressor or other HVAC parts.
Do I need professional help to fix the P1437 code?
If you're comfortable with automotive diagnostics and repairs, you can attempt it yourself. However, professional assistance is recommended for complex wiring or HVAC system work.
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