What are the symptoms of Slow loss of refrigerant or A/C system leakage in Peugeot EXPERT?

Hissing from vents. Slow loss of refrigerant

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Slow loss of refrigerant or A/C system leakage

Q: How to fix Slow loss of refrigerant or A/C system leakage in Peugeot EXPERT?

Replacing the TXV valve O-rings or the valve itself. Removal of the windshield required.

in Peugeot EXPERT (2016-2024)

Symptoms

Hissing from vents
Slow loss of refrigerant

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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

2,0 i/1,6 HDi/2,0 HDi

Refrigerant: R134a Amount (g): 675g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 135ml

Standard

Refrigerant: R134a Amount (g): 940 – 980g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 120 – 150ml

See full specification

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