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Engine-Codes – Generic – P1436

P1436 Code - A/C Evaporator Air Temperature Circuit Low

Quick Answer

The P1436 code indicates a problem with the A/C evaporator air temperature circuit being too low. Common causes include Faulty evaporator air temperature sensor, Wiring issues or electrical faults in the A/C system, Malfunctioning A/C control module. 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 indicates A/C Evaporator Air Temperature Circuit Low.
Common causes
Common causes include Faulty evaporator air temperature sensor, Wiring issues or electrical faults in the A/C system, Malfunctioning A/C control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1436 Description

The P1436 code indicates a problem with the A/C evaporator air temperature circuit being too low. The A/C evaporator is a component of the vehicle's air conditioning system responsible for cooling the air before it enters the cabin. The air temperature sensor in the evaporator helps regulate the temperature of the air being circulated, ensuring that the A/C system operates efficiently. When this sensor detects a low temperature that is outside the normal range, it triggers the P1436 diagnostic trouble code.

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

Common Causes of P1436

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

Symptoms of P1436

  1. Reduced cooling performance from the A/C system
  2. Inconsistent temperature control in the cabin
  3. A/C system not blowing cold air
  4. Strange noises coming from the A/C system
  5. Check engine light illuminated on the dashboard

How to Fix P1436

  1. Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific fault code (P1436) and any additional codes that may be present.
  2. Inspect the wiring and electrical connections related to the A/C evaporator air temperature sensor for any signs of damage or corrosion. Repair or replace any faulty wiring as needed.
  3. Test the A/C evaporator air temperature sensor using a multimeter to determine if it is functioning correctly. Replace the sensor if it is found to be faulty.
  4. Check the A/C control module for any malfunctions or errors that may be causing the issue. Reset or replace the control module if necessary.
  5. Recharge the A/C system with the appropriate refrigerant if low levels are detected. Inspect the evaporator core for any leaks or damage and address as needed.

Cost to Fix P1436

The cost of repairing a P1436 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor to resolve this problem. Keep in mind that additional diagnostic time may be needed to accurately pinpoint the cause of the code, so it's essential to consult with a qualified mechanic to get an accurate estimate for your vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but these rates can vary based on location and the shop's expertise.

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Code P1436 Information for Specific Makes

  • P1436 Audi — Secondary Air Injection Pump Relay Circuit Electrical Malfunction
  • P1436 Buick — Particulate Matter Sensor Control Module Temperature Signal Message Counter Incorrect
  • P1436 Cadillac — Particulate Matter Sensor Control Module Temperature Signal Message Counter Incorrect
  • P1436 Chevrolet — Particulate Matter Sensor Control Module Temperature Signal Message Counter Incorrect
  • P1436 Ford — A/C Evaporator Air Temperature Circuit Low
  • P1436 GMC — Particulate Matter Sensor Control Module Temperature Signal Message Counter Incorrect
  • P1436 Lincoln — A/C Evaporator Air Temperature Circuit Low
  • P1436 Mercury — A/C Evaporator Air Temperature Circuit Low
  • P1436 Toyota — Bypass Valve Malfunction
  • P1436 Volkswagen — Secondary Air Injection Pump Relay Circuit Electrical Malfunction
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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