Engine-CodesMercury – P1436 Mercury

P1436 Mercury Code - A/C Evaporator Air Temperature Circuit Low

Quick Answer

The P1436 diagnostic trouble code for Mercury vehicles indicates an issue with the A/C evaporator air temperature circuit being too low. Common causes include Faulty A/C evaporator temperature sensor, Wiring or electrical issues in the A/C evaporator air temperature circuit, Low refrigerant levels in the A/C system. 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
P1436 Mercury indicates A/C Evaporator Air Temperature Circuit Low.
Common causes
Common causes include Faulty A/C evaporator temperature sensor, Wiring or electrical issues in the A/C evaporator air temperature circuit, Low refrigerant levels in the A/C system.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1436 Mercury Description

The P1436 diagnostic trouble code for Mercury vehicles indicates an issue with the A/C evaporator air temperature circuit being too low. The A/C evaporator is responsible for cooling down the air that is blown into the cabin of the vehicle. When the air temperature circuit is reading as too low, it can disrupt the proper functioning of the A/C system and affect the overall comfort level inside the vehicle.

OBDII Code P1436 Mercury - A/C Evaporator Air Temperature Circuit Low
P1436 Mercury Code - A/C Evaporator Air Temperature Circuit Low

Common Causes of P1436 Mercury

  1. Faulty A/C evaporator temperature sensor
  2. Wiring or electrical issues in the A/C evaporator air temperature circuit
  3. Low refrigerant levels in the A/C system
  4. Malfunctioning A/C compressor
  5. Faulty A/C control module

Symptoms of P1436 Mercury

  1. A/C system blowing warm air
  2. Inconsistent temperature control from the A/C system
  3. A/C system not cooling the cabin effectively
  4. Illumination of the check engine light on the dashboard

How to Fix P1436 Mercury

  1. Begin by diagnosing the specific cause of the P1436 code by using a diagnostic scan tool to read the code and identify the issue.
  2. Inspect the A/C evaporator temperature sensor and its wiring for any signs of damage or malfunction. Replace the sensor if necessary.
  3. Check the refrigerant levels in the A/C system and top up if low. Perform a leak test to ensure there are no refrigerant leaks.
  4. Test the A/C compressor and A/C control module to ensure they are functioning correctly. Replace any faulty components as needed.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the A/C system to verify that the issue has been resolved.

Cost to Fix P1436 Mercury

The cost of repairing the P1436 code on a Mercury vehicle can vary depending on the specific cause of the issue and the parts/labour required. On average, the repair costs for this issue can range from $200 to $500, including parts and labour. However, it is important to note that the actual repair costs can differ based on the location, vehicle make and model, and the rates charged by the auto repair shop. It is advisable to obtain a detailed quote from a certified mechanic to determine the precise cost of addressing this issue.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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