P0536 OBD-II Trouble Code: A/C Evaporator Temperature Sensor Circuit Range/Performance

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0536 code

P0536 is a diagnostic trouble code (DTC) for "A/C Evaporator Temperature Sensor Circuit Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0536 DIAGNOSTIC Get a fair and transparent estimate upfront

P0536 code definition

The P0536 trouble code detects an issue with the A/C evaporator temperature sensor circuit.

What the P0536 code means

The P0536 code is a generic OBD-II trouble code that notes a problem with the A/C (air conditioner) evaporator temperature sensor. The temperature sensor is responsible for sending system voltage data to the powertrain control module (PCM), which then uses the information to help control the A/C system. When the PCM receives voltage readings that are excessively low or high, the P0536 trouble code will be detected.

What causes the P0536 code?

The P0536 trouble code is usually caused by a defective evaporator temperature sensor. However, there are a few other potential causes, such as:

  • Malfunctioning expansion valve (which results in an evaporator core freeze up)
  • Damaged electrical components, such as loose wires or corroded connectors
  • Overcharged A/C system
  • Low levels of refrigerant
  • Malfunctioning climate control head

What are the symptoms of the P0536 code?

The P0536 trouble code will usually be accompanied by the check engine soon Warning Light, and may also result in the A/C light on the climate controls flashing repeatedly. Most notably, when the P0536 code is detected, the air conditioning system will likely not be working. There may also be water drips from the system, which may be detectable from inside the vehicle.

How does a mechanic diagnose the P0536 code?

The P0536 could should be diagnosed with the assistance of an OBD-II trouble code scanner. A trained technician will look at the freeze frame data from the scanner to assess the code, and to look for any additional codes that have been detected. The codes should then be reset, and the vehicle should be restarted. If the P0536 code does not return, it was likely erroneously detected, or possibly an intermittent issue.

If the code does return, the mechanic will start by visually assessing the electrical components of the A/C system. All of the wires and connectors should be checked to make sure they are in proper condition and working well. Any electrical components that are not up to standards should be replaced. In addition to this, the technician should check the refrigerant levels, and add more refrigerant if necessary.

Following these steps, an A/C gauge should be connected to the vehicle. The car can then be turned on, and the A/C and blower speed set to their highest settings. The mechanic can compare these readings to the manufacturer’s settings to help determine where the issue is arising. It is likely that the issue is coming from a failed evaporator temperature sensor, but the readings can both confirm that, and let a technician know if a larger issue is causing the sensor failure.

After any and all repairs, the codes should be reset and the vehicle restarted before the mechanic continues.

Common mistakes when diagnosing the P0536 code

The most common mistake made when diagnosing the P0536 code comes from a failure to adhere to the OBD-II trouble code diagnosis protocol. The diagnosis protocol should always be followed exactly, to ensure that the inspection is performed correctly, and in the most efficient order.

It is fairly common for refrigerant to be added as a solution, even when the refrigerant levels are sufficient. This can result in excess refrigerant, which can be very harmful to the system.

How serious is the P0536 code?

A vehicle with the P0536 code is still very drivable, but the air conditioning system is unlikely to work. Since you never know when you’ll need your air conditioning, it’s important to have the system inspected and repaired as soon as possible.

What repairs can fix the P0536 code?

Some of the fixes for the P0536 code include:

Additional comments for consideration regarding the P0536 code

After the problem has been repaired, it’s a good idea for the mechanic to use the A/C gauge to make sure that all components are functioning properly.

Need help with a P0536 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
P0536
Check Engine Light

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0536 code.

SCHEDULE P0536 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

5,079

Rating Summary
4,679
195
48
27
130
4,679
195
48
27
130

Robert

39 years of experience
15 reviews
Robert
39 years of experience
Jaguar S-Type - Check Engine Light is on - Scottsdale, Arizona
Bob is very thorough and an all-around professional. I'll be booking his service for both my cars as often as work is needed.

Eduardo

18 years of experience
353 reviews
Eduardo
18 years of experience
Dodge Dakota - Check Engine Light is on - Stafford, Texas
Great guy very knowledgeable and very professional one of the best mechanics I've ever met. He explained what was going on and let me know my options. Will be asking for him again!

Michael

15 years of experience
524 reviews
Michael
15 years of experience
Toyota Corolla - Check Engine Light is on - Atlanta, Georgia
Michael was a great mechanic, and nice guy. He was knowledgeable and offered examples of my current problems while also sharing solutions.

Juan

8 years of experience
53 reviews
Juan
8 years of experience
Honda Pilot - Check Engine Light is on - Chapel Hill, North Carolina
Great job, explained the situation to me and told me to try to get the dealer to repair it under warranty. I certainly will but if they give me a song and dance I will be back and have Juan do it in a heartbeat. I’m well pleased.


More related articles

C1095 OBD-II Trouble Code: ABS Hydraulic Pump Motor Circuit Failure
Trouble code C1095 means the ABS hydraulic pump motor circuit has failed, often because of a damaged wheel speed sensor or wheel bearings.
P0827 OBD-II Trouble Code: Up and Down Shift Switch Input Circuit Low
P0827 means there is an issue with the up and down shift switch circuit, possibly due to damage to the switch.
Symptoms of a Bad or Failing Thermo Coolant Fan Switch
Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.

Related questions

Check engine light on

The code P0442 is for a very small leak in the evaporative system of the fuel tank and its vent system. A leak in the gas cap is the most common cause of this code and the gas cap or...

Check Engine light illuminated

Hi. A Check Engine Light that relates to a leak will usually be an EVAP leak. EVAP leaks can be very hard to find without the proper training or equipment. I suggest having a well technician use a smoke machine...

Yaw sensor needs replacement

Hi there. Yes, the sensor, along with the dependent systems, require what is called a "zero point" calibration when it is replaced. The dealership does not have to be the entity that performs this calibration. However, it is dependent upon...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com