High Priority 92% confidence

Air conditioning stopped cooling / no response to AC button

Q: How to fix Air conditioning stopped cooling / no response to AC button in Opel Grandland X?

Replacement of the expansion valve with a version with changed internal geometry (corrected revision from the manufacturer). Opel/Vauxhall TPI available. If the Astra K whistles when the AC is turned on but cools normally, it's the expansion valve, not the compressor. Don't be pressured into replacing your compressor.

in Opel Grandland X (2015-2022)

Symptoms

Hissing from vents

DTC error codes

Brak

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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

Refrigerant: R1234yf Amount (g): 480-530g Oil: PAG YF ISO 46 Oil (ml): 120 - 150ml

X skraplacz 19,3 dm3

Refrigerant: R1234yf Amount (g): 450g Oil: PAG 46 YF PAO 68 AA1 lub PAG ISO 46 YF Oil (ml): 110ml

X skraplacz 23 dm3

Refrigerant: R1234yf Amount (g): 525g Oil: PAG 46 YF PAO 68 AA1 lub PAG ISO 46 YF Oil (ml): 110ml

See full specification

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