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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 Opel Zafira C?

Burnout (regeneration) or physical replacement of a clogged DPF particulate filter. Disconnecting the air conditioning is a standard procedure of the engine controller in DPF emergency mode.

in Opel Zafira C (2009-2019)

Symptoms

No cold air from vents

DTC error codes

P2002

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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

Life (K0)

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

C (P12)

Refrigerant: R134a Amount (g): 630g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 125ml

C (P12) z silnik: A18XER/A18XFR/A18XEL

Refrigerant: R134a Amount (g): 600g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 125ml

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Air conditioning stopped cooling / no response to AC button

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in Zafira C

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