[SOLVED] P1437 Code: A/C Evaporator Air Temperature High – Fix It Now!

The automobile fault code P1437 indicates a problem with the AC Evaporator Temperature (ACET) Sensor.

The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

The cause could be a faulty ACET sensor, an open or shorted sensor harness, a poor electrical connection in the sensor circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0. It is important to address this problem promptly to prevent further damage to the vehicle’s systems.

Repair Importance Level3.33 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1437 fault code.

  • The symptoms of the automobile fault code p1437 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1437 can be caused by a faulty AC Evaporator Temperature Sensor, an open or shorted sensor harness, a poor electrical connection in the sensor circuit, or a faulty Powertrain Control Module (PCM).

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  • The fault code P1437 can be caused by the following: a faulty A/C Evaporator Temperature (ACET) Sensor, an open or shorted A/C Evaporator Temperature Sensor harness, a poor electrical connection in the A/C Evaporator Temperature Sensor circuit, or a faulty Powertrain Control Module (PCM).

To fix the p1437 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1437, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The automobile fault code P1437 can be diagnosed and fixed within an estimated repair time of 1.0 hour.

The cost of the repair will depend on the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour.

The P1437 fault code refers to the AC Evaporator Air Temperature Circuit being too high. This code is triggered when the AC Evaporator Temperature sensor signal input exceeds the self-test minimum of 4.5 volts. The AC Evaporator Temperature sensor is located inside the heater core and evaporator core housing, in the air-stream leaving the evaporator core.

It contains a thermistor that varies the resistance to a reference voltage based on the evaporator discharge air temperature. The resulting voltage is interpreted by the Powertrain Control Module (PCM) as the evaporator discharge air temperature reading. The PCM uses this information to maintain the evaporator core temperature and prevent icing.

When the AC Evaporator Temperature sensor reading falls below acceptable levels, the PCM disengages the AC compressor clutch (non-hybrid) or decreases the electric AC compressor speed (hybrid).

Conversely, when the discharge air temperature rises above acceptable levels, the PCM engages the AC compressor clutch (non-hybrid) or increases the electric AC compressor speed (hybrid).

In summary, the P1437 fault code indicates that the AC Evaporator Air Temperature Circuit is reading higher than it should be, potentially affecting the performance of the AC system.

What are the possible causes of the automobile fault code p1437?

If you’re seeing the engine light or service engine soon warning light on your dashboard, it could be due to fault code P1437. This code is often caused by a faulty A/C Evaporator Temperature (ACET) sensor, an open or shorted ACET sensor harness, a poor electrical connection in the ACET sensor circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look out for broken, bent, pushed out, or corroded connector pins.

How can I visually inspect the wiring harness and connectors to fix the p1437 fault code?

If you’re dealing with the p1437 fault code and notice that your engine light is on, it’s time to take action. The most common cause of this issue is a faulty A/C Evaporator Temperature (ACET) Sensor or a problem with the sensor’s wiring. To fix it, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or loose connections. By checking these components, you can identify and address any issues that may be causing the fault code.

What should I look for when checking for damaged components and connector’s pins to resolve the p1437 fault code?

If you’re dealing with the p1437 fault code and your engine light is on, it’s time to roll up your sleeves and get to work. The culprit could be a faulty A/C Evaporator Temperature (ACET) Sensor, an open or shorted ACET sensor harness, a poor electrical connection in the ACET sensor circuit, or even a faulty Powertrain Control Module (PCM). To fix the issue, start by visually inspecting the wiring harness and connectors. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins. Don’t skip this step, as it could be the key to resolving the problem.

p1437 error fault code explained

If your engine light is on and you’re getting the P1437 fault code, it could be due to a faulty AC Evaporator Temperature (ACET) Sensor, an open or shorted sensor harness, a poor electrical connection in the sensor circuit, or a faulty Powertrain Control Module (PCM).

To fix this issue, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded connector pins.

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