P0533 OBD Error Code: Problem & Solutions

<<See All OBD Codes

The trouble code P0533 can be described as A/C Refrigerant Pressure Sensor Circuit High Input. This error code indicates that the signal circuit in the vehicle is detected to be too high.

Now if the trouble code P0533 is appearing, then it would mean that the air conditioning refrigerant pressure in your vehicle is probably too high to safely function. It is related to the air conditioning and if you’re driving in a cold winter climate, you could still see the code because AC is used for defogging your vehicle.

What causes this problem with the A/C Refrigerant Pressure Sensor Circuit High Input?

• Refrigerant pressures/refrigerant level might be low or incorrect
• Some defects in the wires
• The A/C refrigerant pressure sensor might have some defects
• Leakage in the A/C refrigerant pressure sensor
• Faults in the connector
• There can be some electronic climate control or body control module issues
• Bad connections

1. EGR Valve Gasket - There can be some issues with the EGR Valve Gasket due to which you may see P0533 code appearing over and over again. Visit us to buy best quality EGR Valve Gasket online.
2. Crankshaft Position Sensor - A lot of issues can arise do to defective Crankshaft Position Sensor. Did you just see P0533 code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Coolant Temperature Sensor - Faulty Coolant Temperature Sensor can be the reason why P0533 code is flashing. Visit us to purchase top notch Coolant Temperature Sensor online.
4. Fuel Temperature Sensor - It is an important auto part which needs full care. A faulty Fuel Temperature Sensor can be a reason behind the flashing up of P0533 code.
5. Oxygen Sensor - OBD Code P0533 can appear because of faulty Oxygen Sensor.
6. Air Fuel Ratio Sensor - There can be some issues with the Air Fuel Ratio Sensor due to which you may see P0533 code appearing over and over again. Visit us to buy best quality Air Fuel Ratio Sensor online.
7. Manifold Absolute Pressure Sensor - Are you facing some faults in your Manifold Absolute Pressure Sensor? Don’t worry and get them replaced or else P0533 code can turn up.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Limited HVAC use
• Erratic/fluctuating fan air temperature
• The A/C compressor might not be engaging when required
• Incorrect temperatures coming from fan air
• HVAC system operating abnormally

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• All the damaged wiring or connectors should be repaired properly
• If there is a refrigerant leak, then you should repair it carefully
• Replace the low refrigerant pressure sensor
• It is essential to restore the cooling fan
• The damaged climate control head should be replaced
• Restore or repair the A/C compressor switch as per the requirements

There is no need to get strained if your OBD Code is still flashing up as we are here at your service. Have a look at our superior variety of Ntk Oxygen Sensor, Denso Oxygen Sensor, Bosch O2 Sensor, Idle Air Control Valve, Engine Valve, Throttle Valve and many more. Now all your problems would vanish within no time.

Here are some steps which you should follow in order to diagnose this fault code:

Before you begin the troubleshooting process for any malfunction you should research the technical service bulletins (TSBs) for the specific vehicle by year, model and transmission. This step can save you time and money during diagnosis and repair!

It all depends upon what tools/knowledge you have access to, you can easily verify the A/C refrigerant pressure sensors operation. The 2 easy ways to do this is: 1. Depending on your OBD reader/scan tool abilities and limitations, you may be able to monitor refrigerant pressures and other desired values while system is operating to verify the sensor's functionality. 2. If you have an A/C manifold gauge set, you can monitor the pressures mechanically and compare pressures with your manufacturer's specific desired values. Keep this in mind that if you have no experience with refrigerant, so it is recommended not to dive into pressure testing as refrigerant is a hazard to the environment so it’s not something to mess around with

Test the A/C refrigerant pressure sensor. Most times this sensor is a 3-wire pressure transducer. That being said, testing it will involve testing between the pins and recording your findings. The desired values of this test varies a meaningful amount between manufacturers, temperatures, type of sensor etc, so make sure your info is accurate. Be sure that you are using the appropriate test pins along with your multimeter when testing pins/connectors. A damaged pin or connector could cause future intermittent hard- to-find electrical gremlins

Carefully inspect the wiring. Sometimes these sensors will be mounted on an A/C pressure line or close to a line connection so the harness will be routed accordingly. Make sure the sensor looks good physically and the line is fastened properly

Common Mistakes When Diagnosing The P0533 Code

• The most common mistake can be to simply assume that the sensor in charge of triggering the P0533 code. That is the reason why it is very important for the mechanics to carefully examine all the parts and then should further proceed with the repairs