Fault code P0532 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0532 – A/C Refrigerant Pressure Sensor Circuit Low Input

P0532: Causes, signs and repairs

Error code P0532 is displayed and the check engine light is on - what does this mean?

The OBD system detects a fault in the air conditioning pressure sensor circuit, which reports a voltage value that is too low. This DTC mainly affects the air conditioning system and its pressure monitoring system, with the refrigerant pressure sensor not working properly.

What can cause this fault code?

Defective air conditioning pressure sensor
Damaged wiring to the pressure sensor
Corroded or loose plug connections
Short circuit in the sensor cable
Defective air conditioning control unit (A/C module)
Low refrigerant level
Interruption in the earth cable
Incorrect sensor calibration

What symptoms occur in parallel with error code P0532?

Air conditioning not working: The air conditioning does not switch on or does not cool
Compressor does not start: The air conditioning compressor is not activated
Check engine light is illuminated: The MIL light is permanently activated
Irregular cooling: Fluctuating cooling capacity of the air conditioning system
Missing pressure display: No display of the refrigerant pressure in the diagnostic system
Automatic air conditioning shutdown: Safety shutdown to protect the system

How can the problem with error code P0532 be rectified?

The repair requires a systematic check of the air conditioning pressure sensor and its components.
Replace the pressure sensor: Replace the defective A/C pressure sensor with a new original part and calibrate it correctly
Repair wiring: Locate damaged cables to the pressure sensor, repair or replace completely
Clean plug connections: Clean all plugs on the pressure sensor and control unit and treat with contact spray
Top up refrigerant: Evacuate the air conditioning system, check for leaks and fill with the correct amount of R134a or R1234yf
Replace control unit: If the A/C control unit is defective, replace it and have it reprogrammed
Complete system diagnostics: Carry out professional A/C system diagnostics with pressure test and leak test

FAQ - Frequently asked questions about DTC P0532

Can I continue driving with error code P0532?

Yes, it is generally possible to drive, as the trouble code only affects the air conditioning system. However, the air conditioning will not work, which can be unpleasant in hot weather.

How much does it cost to repair error code P0532?

The costs vary depending on the cause: a new pressure sensor costs €50-150, cable repairs €80-200, while a complete air conditioning service with refrigerant charge can cost €150-300.

How do I recognize a defective air conditioning pressure sensor with P0532?

Typical signs are a non-functioning air conditioning system, fluctuating cooling performance or a compressor that does not switch on even though the air conditioning system is activated.

Can I repair error code P0532 myself?

Simple work such as cleaning plug connections is possible, but work on the refrigerant circuit requires special equipment and should only be carried out by specialist companies.

How long does it take to repair P0532?

Depending on the cause, the repair will take 1-4 hours. A simple sensor replacement can be completed in 1-2 hours, while a complete air conditioning diagnosis can take longer.

Does fault code P0532 reappear after the repair?

If the repair has been carried out correctly, the fault code should not recur. If it does, there may be an additional fault in the EOBD system or in other air conditioning components.

Vehicles in which fault code P0532 occurs most frequently

Error code P0532 is an air conditioning-related DTC and can occur in various vehicle models, but is most common in the following vehicles:

Ford: Focus, Mondeo, Fiesta (2005-2015)
Volkswagen: Golf, Passat, Polo (2004-2014)
Opel: Astra, Corsa, Vectra (2006-2016)
BMW: 3 Series, 5 Series, X3 (2007-2017)
Mercedes-Benz: C-Class, E-Class, A-Class (2008-2018)
Audi: A3, A4, A6 (2005-2015)
Peugeot: 207, 308, 407 (2006-2016)
Renault: Megane, Clio, Scenic (2007-2017)

If the code P0532 occurs in your vehicle, you should first have an OBD diagnosis carried out to determine the exact cause. As air conditioning systems are pressurized and contain special refrigerants, it is advisable to visit a specialist workshop for more complex repairs. Regular air conditioning maintenance can often prevent such problems and extend the service life of the system.

How to change front wheel bearing on MERCEDES-BENZ M W163 TUTORIAL | AUTODOC

151K views

Published on: 26/07/2018
How to change fuel filter BMW 3 (E90) [TUTORIAL AUTODOC]

241K views

Published on: 17/04/2019
How to change Front wheel bearing on VW GOLF 4 TUTORIAL | AUTODOC

177K views

Published on: 26/07/2018
How to change a rear brake pads FORD FOCUS 3 TUTORIAL | AUTODOC

169K views

Published on: 27/07/2018
How to change pollen filter / cabin filter on AUDI A6 (C6) [TUTORIAL AUTODOC]

150K views

Published on: 25/10/2019
How to change engine thermostat on PEUGEOT 207 [TUTORIAL AUTODOC]

147K views

Published on: 09/12/2020
How to change fuel filter NISSAN X-TRAIL T30 TUTORIAL | AUTODOC

139K views

Published on: 27/07/2018
How to change front wheel bearing TOYOTA YARIS XP10 TUTORIAL | AUTODOC

120K views

Published on: 26/07/2018

How to change serpentine belt on MERCEDES-BENZ A-Class (W169) – replacement guide

Free download PDF
1.38 MB
How to change engine oil and filter on BMW 1 Hatchback (F20) – replacement guide

Free download PDF
1.62 MB
How to change engine thermostat on VW Golf VI Hatchback (5K1) – replacement guide

Free download PDF
4.12 MB
How to change water pump & timing belt kit on Ford Fiesta JA8 – replacement guide

Free download PDF
7.83 MB
How to change front strut mount on AUDI A1 Hatchback (8X1, 8XK) – replacement guide

Free download PDF
3.8 MB
How to change water pump & timing belt kit on Peugeot 307 SW – replacement guide

Free download PDF
7.01 MB

Want to get more useful information?

Ask questions or share your repair experience on the car forum. Subscribe to updates so you don't miss out on new guides.

Ask on the forum

5 Essential Tips to Prepare Your Car for Winter | AUTODOC tips

6K views

Published on: 05/02/2024
Unveiling the secrets: Detecting vacuum leaks with a Smoke Machine | AUTODOC

19K views

Published on: 23/07/2020
5 reasons why your car is making a knocking sound

11K views

Published on: 05/06/2025
Fuse Replacement Made Simple: Step-by-Step Guide | AUTODOC

3K views

Published on: 15/08/2020