High Priority 98% confidence

A/C cooling is weak and gradually loses performance

Q: How to fix A/C cooling is weak and gradually loses performance in Skoda Octavia iV?

The work must be carried out by a technician with SEP (high voltage) qualifications. Replacing the damaged chiller with a new OEM element, thorough and time-consuming flushing of both circuits from mixed coolant and compressor oil, and then filling them with fresh refrigerant and coolant.

in Skoda Octavia iV (2019-2024)

Symptoms

A/C cooling is weak and gradually loses performance

DTC error codes

B10ABF0

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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

IV - (NX)

Refrigerant: R1234yf Amount (g): 430-480g Oil: PAG YF ISO 46 Oil (ml): 120 - 140ml

III - (5E)

Refrigerant: R134a Amount (g): 450-500g Oil: PAG 46 Oil (ml): 120 - 140ml

III (5E3/5E5) kompresor Denso + Delphi

Refrigerant: R134a Amount (g): 490g Oil: PAG PAO 68 lub PAG ISO 46 Oil (ml): 110ml

See full specification

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