I pulled up the codes and e91 come up what is it how do i fix it

Question edited for clarity, spelling of the maker, toss in some CAPS and make sentences.
Question moved to model category.

Both are Transmission errors

E-39 Error

https://caddyinfo.ipbhost.com/topic/10886-92-deville-error-code-e39/

and E-98

Diagnostic Code -- E98 Need Help

Cadillac Owners Forum https://www.cadillacforums.com > threads > diagnostic...
Nov 9, 2005 - E98 - High RPM P/N to D/R in ISC Range check your tranny. its sometimes called a VCC overstress error. dont change gears until car is totally ...

Great, now I have MORE trouble codes!! E91 and E98
Aug 7, 2006
Error codes E22, E32 E52 E98 - Cadillac Owners Forum
May 5, 2004
More results from www.cadillacforums.com

If the alternator is charging the battery it will not be the fuse. The alternator would simply stop working if the fuse has blown.
If the battery isn't holding charge you might have a power drain somewhere in the vehicle. Something in the electrics may not be turning off correctly and draining the battery. Do you have any warning lights on the dash? Have you access to an OBD2 scanner to check for any Trouble Codes?
If it is a power drain the simplest fix is to get a good Auto Electrician to check the vehicle. Finding a power drain or an electrical short can be a real pain in the tail bone job because there is so much electronics on a car. Paying an expert to do it is a lot quicker and easier as they have the right tools to do it.

Code 22 is a problem with the TPS circuit being too low or zero voltage. The computer measures throttle position depending on how much voltage is returned from the sensor.
Code 52 is the ECM lost battery power since last test, usually from disconnecting the battery cable.
The 7.0 means you have reached the end of the test.

How to Open Trunk with No Battery. - Bimmerpost

www.e90post.com/forums/showthread.php?t=690147
May 11, 2012 - 22 posts - ‎16 authors If you're reading this, you are probably stuck like I was stuck - hopefully .... I'm actually surprised BMW made this possible - seems like a real ... Does this also apply to the 3 series Wagon (E91 a.k.a Touring)? Mine is a 2005 and there is no key lock in thetailgate. ... Drives: 2006 E91 325xi 6 speed wagon. Trunk won't open???
21 posts
Jul 31, 2008
Trunk opening by itself - Page 2
22 posts
Dec 28, 2006
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Use Google to get the answer


GM/Cadillac OBD1 Codes E91 & F47

P0031....HO2S Heater Control Circuit Low (Bank 1 Sensor 1)

P0052....HO2S Heater Control Circuit High (Bank 2 Sensor 1)

code 91 does not exist

Take the vehicle back to the place that created that all those issues.
You should not have to worry and look for answers. We can not help you over the internet
If it always read zero,not to be hurtful,that is neglect on your part. Have these problems checked out within days, of them first showing up.
You have had issues from the moment your speed indicator failed to work correctly. Most likely you fix that, and all you crazy codes go away.

On this website you find fuse box diagram and description for BMW 3 Series (E90, E91, E92, E93) - 2005 - 2010

BMW 3 Series E90 E91 E92 E93 2005 2010 fuse box diagram

e52 is ecm memory reset
e91 park neutral safety switch
e98 transaxle shift fault

the switch on top of the transmission where the shift cable is . it probly is not anny good. check all wiring . make sure thair is no dirt inside the connector