P1437 2008 FORD FUSION - A/C Evaporator Air Temperature Circuit High

P1437 2008 FORD FUSION Possible Causes

• 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 is the P1437 2008 FORD FUSION code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the P1437 2008 FORD FUSION code

Labor: 1.0

The cost to diagnose the P1437 2008 FORD FUSION code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

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Possible Symptoms

• Engine Light ON (or Service Engine Soon Warning Light)

P1437 2008 FORD FUSION Meaning

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 (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.

More Information

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Repair Importance Level:1 Repair Difficulty Level:3