Xoutpost.com

Xoutpost.com (https://xoutpost.com/forums.php)
-   X3 (F25) Forum (https://xoutpost.com/bmw-sav-forums/x3-f25-forum/)
-   -   1D2008 code - map thermostat jammed open (https://xoutpost.com/bmw-sav-forums/x3-f25-forum/111337-1d2008-code-map-thermostat-jammed-open.html)

X5Nafta 01-08-2020 08:54 PM

1D2008 code - map thermostat jammed open
 
14 XDrive3.5i with 93k miles on it. Got check engine light and showing 1D2008 code in ISTA.

Code appears to be pointing to Auto Tranny cooler Thermostat stuck open, but based on some reading it could also be coolant thermostat (BTW WP and thermostat are original).

Anyone had experience with this code?

Thanks in Advance!

X5Nafta 01-10-2020 02:16 PM

UPDATE
Found TSB on line related to my DME error:

Fault Code 1D2008: Map thermostat: jammed open is stored in the DME. There may also be a complaint of low heat output with lower outside temperatures.

https://static.nhtsa.gov/odi/tsbs/20...58490-9052.pdf

According to tsb, by process of elimination, I had to find out if it was my engine coolant thermostat or ATF trans thermostat (they are in the same loop). Followed their procedure, and ended up being my engine thermostat.

ADDITIONAL SYMPTOMS:
* On 40-50 F deg days, my coolant temp was between 30-45 deg C.
* Radiator Fan was running at full blast.
* Otherwise, car drove normal.

I will be replacing WaterPump and Thermostat, since they are original and 93k miles old.


All times are GMT -4. The time now is 07:32 AM.

vBulletin, Copyright 2024, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved.