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Is your Check Engine light on with BMW codes 2882 or 2883? The OBDII (on-board diagnostics version 2) generic codes are P0171 P0174.

Don't let other shops mistakenly replace your air mass meter (MAF sensor). Your most likely problem is an incompatible air filter. The proper air filter for your car is supposed to have a foam backing that directs air through the system properly.

Incorrect air filter
BMW air filter 13 72 1 730 946 with no foam
This filter lacks the foam pre-filter panel.
CORRECT air filter
BMW air filter 13721744869 with foam
This is the filter that should be used and the one that we stock at Autobahn Performance Inc..

BMW service bulletin

2003 BMW 325i

M54/M56i MIXTURE TOO LEAN — FAULT CODES 2882/2883 ARE STORED IN THE DME
M54/M56: MIXTURE TOO LEAN - FAULT CODES 2882/2883 ARE STORED IN THE DME
TECHNICAL SERVICE BULLETIN

Reference Number(s): Sl B 12 20 07, Date of lssue: November, 2007
_ E85 with M54 produced from 3/02 to 11/05; E46 with M54 from 8/00 to 8/06; E46 with M56 from BMW.

12/01 to 12/04

GROUP: 12 - Engine Electrical Systems

SUBJECT
M54/M56: Mixture Too Lean - Fault Codes 2882/2883 are Stored in the DME

SITUATION
The customer complains that the "Service Engine Soon" light is illuminated. The fault codes "2882/2883 - fuel trim, mixture too lean" are stored in the DME.

CAUSE
Possible causes may include: incorrect air filter, unmetered air or a defective air mass meter.

PROCEDURE
Remove and inspect the air filter element. Only the filter with the P/N 13 72 1 744 869 must be fitted. lf the filter is the correct one, please follow the test plan and repair accordingly.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty. Please refer to the latest KSD for all applicable labor operations and allowances. lf the appropriate labor operation is not contained in KSD, then a work time labor operation should be used.

Defect Code: 13 72 01 48 00