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Title: Audi TTq 225 2002 high MAP readings when engine off Post by: Jussi-R on May 09, 2021, 01:47:20 AM Hello guys!
I've been wondering why my ecu thinks that actual boost pressure is 1075 mbar when engine is shut off. Shouldn't the MAP reading be the same as barometric pressure? I've changed the MAP sensor to a new OEM Bosch one (0 261 230 073) but the reading is still off. Is the actual boost pressure variable calculated in some way, or is it directly proportional to MAP sensor voltage? I read somewhere on the forum that my map sensor has the same voltage characteristics as 2.5 bar (0 281 002 177) sensor. Maybe next step is to measure if the sensor is giving correct voltage readings compared to the datasheet. I logged barometric pressure and actual boost pressure with ME7Logger. |