What are the symptoms of Air conditioning stopped cooling / no response to AC button in Ford PUMA?

No cold air from vents. Hissing from vents. Vibrations or humming after turning on A/C

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Air conditioning stopped cooling / no response to AC button

Q: How to fix Air conditioning stopped cooling / no response to AC button in Ford PUMA?

Replacing the aluminum air conditioning pipe with a version with improved (more flexible) mounting. To prevent the new pipe from breaking, mechanics often do not rigidly tighten the clamp mounting it to the body, but use a thick rubber washer (silentblock) that absorbs vibrations from the engine.

in Ford PUMA (2018-2024)

Symptoms

No cold air from vents
Hissing from vents
Vibrations or humming after turning on A/C

DTC error codes

P0532 (A/C Pressure Sensor Circuit Low)

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

(CEE)

Refrigerant: R1234yf Amount (g): 400-450g Oil: PAG YF ISO 46 Oil (ml): 110 - 130ml

Standard

Refrigerant: R134a Amount (g): 730 –750g Oil: WSH-M1C231-B PAO 68 lub PAG ISO 46 Oil (ml): 200ml

Wszystkie wersje

Refrigerant: R1234yf Amount (g): 430g Oil: PAG ISO 46 YF Oil (ml): 100ml

See full specification

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