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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 Citroën Jumper?

Replacing the entire air conditioning compressor with a new or refurbished one. NOTE: Many mechanics try to save money and replace only the compressor front seal. It only helps for a while! In these compressors, the metal shaft itself wears (grooves) over time. A new seal on a worn shaft will release gas anyway. Replace the entire compressor at once to avoid complaints. Sometimes replacing it with an equivalent Denso from a different year works.

in Citroën Jumper (2006-2022)

Symptoms

Slow loss of refrigerant

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

z układem klimatyzacji z tyłu

Refrigerant: R134a Amount (g): 950g Oil: SP 10 PAO 68 lub PAG ISO 46 b.d. Oil (ml): 1996 – 03ml

See full specification

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Air conditioning stopped cooling / no response to AC button

Symptoms

DTC error codes

A/C Technical Specifications

Other problems in Jumper

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