I'll add my two penneth to this thread.
Had my 156 2.4 JTD 10v 150hp for about a month. I knew it had an issue with severe turbo lag and not pulling away after hard driving. No apparent engine light, but with OBD scanner showed air intake temp sensor and MAF problem.
sensor is F00C 2G2 044 in housing 0280 002 309.
I tried a replacement housing ending 019, which had sensor ending 030, but it has a flat spot at around 3000rpm, so maybe it's knackered too. Some suggest that sensor ending 033 030 and 044 are all compatible, but I'm not so sure.
I've bought another used 044 today and still have the turbo lag issue, but no error codes, so I'm absolutely stumped now.
got the used 044 from a 1.6 Twin spark on an 02 plate. same housing as my 2.4 JTD
So, to be clear. 2.4 JTD 150hp 10v BOSCH housing 0280 002 309 - SENSOR BOSCH/F00C 2G2 044
Same housing and sensor on 1.6 Twin spark