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Error code help "17564 P1156 Manifold Abs.Pressure Sensor Circ. Open/Short to Ground"

46K views 16 replies 7 participants last post by  topless25  
#1 ·
Can anyone help with the error code "17564 P1156 Manifold Abs.Pressure Sensor Circ. Open/Short to Ground", basically my car started to lose power, thought it was the MAF sensor, was struggling to hit 70 on M-way, revving high but then not giving any power. Tried a few things, did the test for MAF sensor, holding at constant revs in gear the car just flew after a ahort while, but then lost the power as soon as i changed gear, or hit a hill!

I had the MAF sensor replaced, but the error code "17564 P1156 Manifold Abs.Pressure Sensor Circ. Open/Short to Ground" is coming up, and car still has no power - any ideas??!! Mechanic thinks its the turbo, but I dont think it is, any help would be appreciated otherwise the car staying on the ramp!!
 
#6 ·
yes it is located just on the side/top of the intercooler, very fiddly to get to, i think the best route of approach would be whip the bumper and headlight off so you can get some decent access to it because the screws on mine were badly corroded and won't stand for much before they round off.

open/short to pos could be as simple as it being unplugged(somehow) or a wire been broken.

or if they are fine then it looks like u will need a new MAP sensor.
 
#9 ·
Did you do it yourself? Did you remove the headlight, windscreen fluid bottle and bumper?

I cant find the MAP on the GSF/Eurocarparts site, will try calling them tomorrow. As mines still at the mechanics gonna call him to take a look at it tomorrow, he replaced a tyre/tracking rod & cv joint for me last week, think he may have loosened something at the time....
 
#11 ·
I had the MAP sensor replaced, and is running much better - seems to be much more responsive than before, no more limp mode!!

Had the MAF sensor done at the same time, although this probably wasn't required, paid about 40 quid for the MAP, 69 for MAF from Allparts.

Thanks for your help guys - otherwise the mechanic was about to start taking the turbo apart!