U032ASoftware Incompatibility With A/C Compressor Control Module
- Generic OBD-II code · Network
- How the car detects it
- The A/C compressor control module drives an electric refrigerant compressor, as used in hybrid and electric cars, and reports speed and status to the climate controller. U032A means that controller considers the compressor module's software or learned data invalid. Volkswagen and Audi document the code: in the 2021 ID.4 a dead A/C with U032A00 first calls for checking a pending software campaign, not for a new compressor (tech tip 87-23-02TT). On 2022–2023 Audi Q4 e-tron the HVAC electronics J979 store U032A00 when the compressor module J842 has lost its adaptation; running the compressor calibration in the guided test restores cooling (2071838), and a later bulletin names the ME 3.5 update package as the production fix (2074321). U016B is lost contact, U046C invalid data, U0324 concerns the HVAC module. The cabin is not cooled.
- What you may notice
- Air conditioning blows warm, compressor does not run
- Fault returns after a while even when cooling was restored
- On electric cars battery cooling or preconditioning may be limited
- Likely causes
- LikelyCompressor module lost its adaptation and needs the calibration routine
- LikelyClimate or compressor software below the level of an open update campaign
- RareElectric compressor replaced without programming and calibration
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.