Error Code P0536: What It Means & What To Do?

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The P0536 trouble code would start appearing when there is an issue with the A/C (air conditioner) evaporator temperature sensor. The system voltage data is sent to the powertrain control module by the temperature sensor. This information is then used by the PCM to control the A/C system easily. If the powertrain control module would receive the voltage readings which are excessively low or high, then it would start triggering up the P0536 trouble code.

If there would be some faults in the A/C evaporator temperature sensor circuit, then P0536 trouble code would start appearing. This trouble code is generic, which would mean that it can apply to all the vehicles which are equipped with the OBD-II or the vehicles which are made since 1996 up to the present. The specifications on the definition, the troubleshooting steps as well as repairs can always vary from one vehicle make to another.

This can happen because of a lot of reasons and the mechanic should diagnose the specific cause for this code.

What causes this problem with the A/C Evaporator Temperature Sensor Circuit Range/Performance?

• Quirks in the wiring harness connector
• Electrical connection might be intermittent
• The A/C evaporator core might have some faults
• Defaults in the A/C evaporator temperature sensor
• Malfunctioning engine control module
• Some wiring problems within the sensor's circuit
• Problems related to internal resistance

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2. Engine Control Module - A broken Engine Control Module can cause a lot of issues. It would be nice if you get it replaced on time.
3. Powertrain Control Module - Everything is fine with the Air Conditioning Compressor Clutch and still OBD code P0536 flashing? Then there is definitely some fault with the Powertrain Control Module. Get it checked and replace if needed.
4. Engine Wiring Harness - Engine Wiring Harness is an important car part which should never be neglected. May be there is some fault in it due to which P0536 code may start flashing.
5. Air Conditioning Expansion Valve - A faulty AC Expansion Valve can be troublesome. You can always rely on us as we have best auto parts for our customers.
6. Air Conditioning Evaporator - P0536 code does not really end up spoiling your Engine Wiring Harness, but it might also accompany few AC Evaporator issues. We have best AC Evaporator with us.

We care for our customers and that’s why we can totally understand your problem. That’s the reason why we have listed out some major symptoms behind the flashing up of OBD Code P0536. They are mentioned here as follows:

Common Symptoms

• A/C compressor clutch may not engage properly
• No cold air blowing from the air vents
• Fan air temperature might be erratic/fluctuating
• Problems in the proper functioning of the HVAC system

If you wish to correct this fault code, then you have to follow certain steps. Correcting a problem needs your careful attention. Here are some ways with the help of which you will be able to correct the OBD Code P0536:

• Carefully replace the damaged expansion valve
• Replace the evaporator temperature sensor
• The wires and connectors in the A/C system should be replaced properly
• Enough amount of refrigerant should be added to the system

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Do you wish to diagnose P0536 error code easily? Here are some steps which you should follow in order to diagnose this fault code:

• Firstly, locate and visually inspect the A/C evaporator temperature sensor. The evaporator core is located inside the HVAC (heating ventilation and air conditioning) air box. The A/C evaporator temperature sensor is typically mounted to the evaporator itself or very near it. You may be able to gain access by looking under the dash fairly easily. It may also be possible that you will need to remove numerous plastic panels and/or the radio so always refer to your service manual for the specific location. Keep an eye out for any signs of overheating and/ or corrosion on the sensor itself. This may indicative of your problem. You must replace the sensor if it has some defects. Just make sure that your interior is at a reasonable temperature. Start prying on cold plastic and it will break so be careful
• The temperature sensor should then be tested. Most times, these sensors are a resistor type sensor. In other words, the resistance within the sensor changes in direct relation to the temperature. Understanding how this works probably gives you some idea on how to diagnose the sensor itself. Usually, the manufacturer will have a desired resistance at certain temperatures. Using your multimeter you can record the resistance within the sensor and compare it to the desired values specified by your manufacturer. If an open is present, you may have an internal resistance within the sensor itself and will need to be replaced. Your manufacturer may have a specific diagnostic strategy depending on which type of sensor, make, model, etc. so always refer to your service manual. If uncomfortable with electrical testing and/or working around refrigeration systems for that matter, bring your vehicle to a reputable shop
• Then you must check the wiring. Given the location of the evaporator temperature sensor, it may be easy to locate and follow the harness to check for any obvious signs of damage

Common Mistakes When Diagnosing The P0536 Code

• The most common mistake can be to not follow the diagnosis protocol properly. Make sure that you follow the diagnosis protocol to ensure that the inspection is performed correctly as well as efficiently
• A big mistake can be to add refrigerant as a solution even when refrigerant levels are sufficient. Excess level of refrigerant can prove to be harmful to the entire system