1fstss

P0069 Manifold Absolute Pressure - Barometric Pressure Correlation PCM

what does it mean exactly? after my piston swap im getting this code.

tum_tum

i dont know i had the same code..no cel just the code

KillerBee

To high of a compression

Mikey851

Was this CEL set when you were driving or idling? If it was while driving do you remember when the light came on/flashed?

1fstss

while idleing if i remember right.

hungryhip-ccp

iTrader: (2)

ok, wtf i got the same code after my piston swap... it wont go away lol car runs great

op did you find a fix? i have resorted to turning the code off with hpt. i wish i knew a fix or at least why its on

KillerBee

He sold the car before he fixed it but PM 06black on here he is the one that tuned donnys car.

eckow8

hungryhip-cpp: did you find a fix for this? I just started seeing this code myself and along with a p0172 (bank 1 too rich- but I'm running rich for safety reasons right now) but I'm really just trying to figure out this p0069...

MP Cobalt

iTrader: (4)

Your intake manifold is having high pressure. My friends car was reading the same code when his valve snapped. Is your car still running normal?

ShortStack

how much boost is being run?

I know the map sensor is only workable to 22.5 psi, do you think it could be because the boost is above that level, the pcm is just trying to say its unable to read the air?

MP Cobalt

iTrader: (4)

What is his boost levels at? It can be an internal problem. If his car is running normal it could be computer based

eckow8

Yea, car runs perfect except for at idle it surges when i come to a stop and just idling it lopes a bit (my tuner says he cannot correct this for some reason and says every time he has tried to the idle just gets worse). At part and WOT its perfect and I do have the hahn intake manifold btw. Im running 15 psi (spikes at 17) so the amount of boost shouldn't have anything to do with it... thanks for help guys

oh and my tuner did set it so the PE (or VE can't remember exactly) tables kick in earlier (car is basically running open loop besides at cruising speeds) this was due to the fact that my o2 sensor is beat and I dont have the funds right now to replace it...

ShortStack

yea if its not getting that high in boost then my idea is out the window...

Do you think that "sensor" could be pressure sensitive to see if the head was taken off for work?

Like an air tight sensor... catch my drift? I doubt theres something like that, but just an idea...

eckow8

yea i understand what your saying... my motor has never been torn down (all stock) so I don't know wtf to do lol My tuner said it shouldn't be the MAP sensor and that it would be a separate barometric sensor altogether so does anyone know if we have one of these sensors or where I could find out if we do? lol And I'm wondering if this is affecting anything in a bad way, basically what I'm saying is could it throw off the MAP sensor or any other sensor for that matter?

MP Cobalt

iTrader: (4)

It can be something internal, if it wants to fall on its face at idle. If i was you i'd check all the vacuum lines make sure there isn't a leak. If not id try to take the motor apart just to check and make sure nothing internal has happened.

BigD_SS

The p0069 code is the scip and baro sensor correlation. one of the sensors is mounted right on top of the supercharger and the other is mounted on a bracket on the head above th oil filter. I myself just started getting this code only when its been wet and freezing outside if you live where its freezing temps my conclusion thus far is sticking diaphram inside the sensor.

eckow8

well im turbo'd now but i do know what your talking about... so my conclusion is that my MAP sensor is beat then... anyone else agree? and I have only started seeing this when it got really cold out (Buffalo, NY FTL)

oh what do you mean by diaphram?

xCobalt05x

i have this same issue with my car.... no CEL or code when i scan the computer but the idle surges as i come to a stop. not a huge surge but enough to make you think i had cams in it again.

my tuner tuned my car to have PE kick in earlier as well... my guess is the PE thing but i dont know.... maybe some help here would be good.

eckow8

hmmm this is interesting... does anyone know if there is an actual barometric sensor that sends info to the MAP?

I retract my statement about my MAP being fucked bc if it was there would be soo many more problems then just this p0069 code being thrown... its so weird bc there is no change in performance, I'm just worried it might affect something down the road...

xCobalt05x

i first noticed the surging problem when i built my first motor with reduced engine compression... but a rod bearing failed on that motor before i could get it boosted... now i have a stock motor and the turbo and it surges when i come to a coast. it could be that the PE is kicking in too early, or it could be the fact that the vacum from the engine might be causing the problem now that it is trying to "suck" air in through the turbo rather then it being forced in by the turbo (while coming to a stop).

sounds dumb but right now im just trying to think of all possible things.

eckow8

That makes sense. I have always thought that could be a problem, esp since I see crazy vacuum from the hahn intake manifold (18-22 in hg)

but then its back to this p0069 code which shouldn't be related to any of these problems...

Dead Zen

it means there is danger to t3h intake manifold welds. sorry had too, but tis weird

eckow8

you really think so? the welds are perfect on this thing...

xCobalt05x

he was joking, lol. i have a plastic intake manifold from the 2.4

eckow8

lol k cuz it would prob take a grenade to destroy that thing haha