S85 - DME O2 Sensor Faults 2742/2743 (12 21 08)

Publication date: 2009-04-10
Reference number: 12 21 08

S85 - DME O2 SENSOR FAULTS 2742/2743

TECHNICAL SERVICE BULLETIN

Reference Number(s): SI B 12 21 08, Date of Issue: April 10, 2009

BMW:	M5, M6 with the S85 engine produced up to 3/08
GROUP:	Engine Electrical Systems

Superceded Bulletin(s): SI B12 21 08, Date of Issue: November 2008

NOTE: This Service Information bulletin supersedes SI B12 21 08 dated November 2008.

SUBJECT

S85 - DME O2 Sensor Faults 2742/2743

SITUATION

The customer complains that the "Service Engine Soon" (MIL) lamp is illuminated.

The DME fault codes "2742-Oxygen sensor diagnostic heater resistance VKAT bank 1" and/or "2743-Oxygen sensor diagnostic heater resistance VKAT bank 2" are stored in the DME.

The environmental conditions show a heater resistance between 12.5 Ohm and 13 Ohm, and there are no other O2 sensor faults stored in the DME.

There is no driveability complaint associated with this issue.

CAUSE

DME calibration

PROCEDURE

Only if the current vehicle integration level is E060-07-09-530 or lower, program the vehicle using the latest ISTA/P version.

Once the programming and coding session is completed, perform a test drive until the engine is at full operating temperature, followed by an extended idle of 10 minutes. Read the fault memory again and if the faults do not recur, release the vehicle to the customer.

If these oxygen sensor faults recur, or if the current integration level is higher than E060-07-09-530, continue troubleshooting by following the corresponding diagnostic test plans.

WARRANTY

Parts and labor will be reimbursable under the terms of the applicable BMW New Limited Warranty or BMW Emissions Warranty.

WARRANTY INFORMATION

Defect Code:

11 78 02 14 00 - ⁽¹⁾ Main work

Labor Operation:

Labor Allowance:

Description:

61 00 801⁽¹⁾

7 FRU

Reprogram and recode control units (without CAS)

61 00 811⁽¹⁾

8 FRU

Reprogram and recode control units (including CAS)

⁽¹⁾	Main work: Use this labor operation number when this is the only repair being performed, or if this is the main repair when performed along with other repairs at the same time. If this is not the main repair, refer to KSD for the associated (+) labor operation code.