[jairomvp182]

Hello,

I am trading in my car, i can only talk wonders about my jb4 unit, besides that jb4 was removed from my car (e92 n55), i have ******* dp so i was only expecting to find the dp code but instead i found p238 code
P0238 - Turbocharger/Supercharger Boost Sensor "A" Circuit High.
i tried to clear it and it wont go away, i never seen this code, i always ran autoclear off, my friend who has bmw software, ran a car test and found
CODE
0029E0 charge temperature sensor, short circuit to B+
002C6F charging pressure sensor, short to B+

he deleted but i keeps coming back, we checked all the plugs and they look good, we always unplugged the battery every time we were touching the wiring or sensors.

he has done over 5 jb4 installs never ran in to issues, especially taking them off, any ideas will be much appreciated, thank you

[mrjcover]

Originally Posted by jairomvp182

Hello,

I am trading in my car, i can only talk wonders about my jb4 unit, besides that jb4 was removed from my car (e92 n55), i have ******* dp so i was only expecting to find the dp code but instead i found p238 code
P0238 - Turbocharger/Supercharger Boost Sensor "A" Circuit High.
i tried to clear it and it wont go away, i never seen this code, i always ran autoclear off, my friend who has bmw software, ran a car test and found
CODE
0029E0 charge temperature sensor, short circuit to B+
002C6F charging pressure sensor, short to B+

he deleted but i keeps coming back, we checked all the plugs and they look good, we always unplugged the battery every time we were touching the wiring or sensors.

he has done over 5 jb4 installs never ran in to issues, especially taking them off, any ideas will be much appreciated, thank you

Sounnd like you shorted the ground on your DME for the TMAP sensor on Chargepipe... You sure you disconnected the battery before the uninstall??? There's a fix for it.. Just create new ground and connected it to the body terminal on the wheel well...

[jairomvp182]

Originally Posted by mrjcover

Sounnd like you shorted the ground on your DME for the TMAP sensor on Chargepipe... You sure you disconnected the battery before the uninstall??? There's a fix for it.. Just create new ground and connected it to the body terminal on the wheel well...

thank you very much man, life saver.

[Peen]

Did you fix it?

Do you have a 3.5bar sensor that JB4 was converting to work? You would need to get stock TMAP sensor, or rune some sort of tuner to work.

[jairomvp182]

Originally Posted by Peen

Did you fix it?

Do you have a 3.5bar sensor that JB4 was converting to work? You would need to get stock TMAP sensor, or rune some sort of tuner to work.

we will be testing it, i think what he said its the issue, because i even tired a new sensor, its the stock one. i will try to ground
it some time this week

[mrjcover]

Originally Posted by jairomvp182

thank you very much man, life saver.

Yea I had the problem before. New Sensor didn't work as well. Created a new ground a problem disappeared... Do you know which wire to ground???

[Rolando_boosted]

I’m having the same issue, but I don’t have JB4 or anything besides a charge pipe and BOV. I changed my AC pump and but everything back together and took it for a test drive and I have no boost at all, It gave me P0238 code