Car: golf mk4 pd150 tdi
Out of nowhere I suddenly got this issue where I have triangle with exclamation mark warning light on, kinda the one that shows when switch ESP off.
This time it just stays on , so I connected VCDS and got these 2 error codes:
Under Engine section:
17569 - Manifold Temp Sensor (G72): Open or Short to Plus
P1161 - 35-00 - -
Under ABS section
01314 - Engine Control Module
013 - Check DTC Memory
So I suspect issue with MAP sensor where i got 4 wires , I guess 2 for pressure and 2 for temperature.
Pressures works fine - at least reading are plausible and car drives ok, at least to shop and back.
All I found is that its either wiring or sensor itself is faulty.
Wondered if anyone know how to test sensor, specifically for temperature. There seem lots of video how to test pressure and the Voltage should be ~4V and drop when vaccum applied.
But how do i test temperature side. I mean apart from blowing hot air and checking readings, but reading can be wrong because of broken wire or something.
VCDS showed me 140C when car was cold, which I would expect to be wrong as turbo is not yet warmed up enough to affect anything.
Is there some Resistance readings I could check against or something. Obviously new sensor is not expensive ~£20, but if the issue is not in sensor wouldnt want to buy for sake of making sure.