Volkswagen Climatronic Secret Diagnostic Codes Press and hold ECON & DOWN ARROW & FLOOR together Climatronic Codes I've found so far. 0 8.4 C Difference between set and cabin temp 1 Sun Sensor delay Kw/m2 *10 2 Sun sensor 'realtime' 4 Delayed temp out 9.5 C 5 'Real time' Temp out 6 - - - ? 7 Foot well temp out 16.5 C 8 Dash temp out 17.5 C 9 Fan set speed 3.7 Units ? 10 Fan actual speed 3.8 Units ? 11 Temp Flap 11 LO Temp = High number High temp = low number 12 Screen flap 13 recirc falp 14 mid flap 15 0 ? 16 5.0 C ? 17 17.5 ? 18 0.0 C ? 19 6 5 errors ? 20 3.8 ? 21 0.0 ? 22 0.0 C 23 vent temp 17.0 C heat out 24 vent set temp 55.0 C This is automatically set in auto 25 Temp Flap position low limit ? 25 26 Temp flap 25 27 Temp Flap position high limit 235 1 28 Down flap Flap position low limit 22 29 Down Flap position 24 30 Flap position high Limit 231 31 Recirc Flap position low limit17 32 Recirc Flap position 126 33 Recirc Flap position high limit 236 34 Top flap Flap position low limit 23 35 Top Flap 235 36 Top Flap Flap position high limit 236 37 63 Runtime ? 38 0.0 C ? 39 10.3 C ? 40 0 ? 41 35 ? 42 5 ? 43 38h Software version ? 44 05h Software version ? 45 4 ? 46 6 ? 47 6 ? 48 12 ? 49 - - - ? 50 - - - ? 51 0 ? Still a lot of parameters I don't know what they are. If anyone else knows please let me know !