How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Thebmwbum Your Own Question
Thebmwbum, BMW Foreman
Category: BMW
Satisfied Customers: 715
Experience:  31 years BMW Experience
Type Your BMW Question Here...
Thebmwbum is online now
A new question is answered every 9 seconds

2004 530i; I am getting a 281D BSD Generator Signal Fault.

Customer Question

2004 530i; I am getting a 281D BSD Generator Signal Fault. About 2 months ago the alternator started singing and I suspected that it was starting to fail.
Car has ~118,000 miles. also getting 2882 and 2883 Mixture Preparation Bank 1 & 2 FC. Q1) is the alternator the cause of the BSD Fault? Q2) Are the 2882 and 2883 faults related? Also been having some hanging in the shifting lately.
Submitted: 1 year ago.
Category: BMW
Expert:  Thebmwbum replied 1 year ago.


The Bit Serial Data BSD . can be cause by the alternator or oil level sensor

DMW spwcific software would be needed to see if you have the Toems Fault

As well as BSD , YOu can also have the IBS bringing down the BSD line.Check for water in the trunk ,at the Battery and in the spare tire well .

An aftermarket alternator of the wrong type can overcharge the system and cause irregular shifts .

The Mixture Prep I would smoke the induction for intake leaks

and check if the MUltplicative Adaptatiojn is out of range

Some scanners will not pick that up

Enssure that the alternator is not overcharging first.



Related BMW Questions