Page 1 of 4

SI B12 09 16
Electrical Systems

April 2016
Technical Service

SUBJECT

N20 – The Service Engine Soon Light is On with DME Fault 118602 Stored
MODEL

F22 (2 Series Coupe)
F23 (2 Series Convertible)
F25 (X3)
F26 (X4)
F30 (3 Series Sedan)
F31 (3 Series Sports Wagon)
F32 (4 Series Coupe)
F33 (4 Series Convertible)
F34 (3 Series Gran Turismo)
F36 (4 Series Gran Coupe)
With the N20 engine and MEVD172P DME produced from 3/2013 to 7/2016
F10 (5 Series Sedan)
With the N20 engine and MEVD172P DME produced from 7/2013 to 7/2016
SITUATION

The Service Engine Soon light is on (MIL) with only the following oxygen sensor fault stored.
z

118602 - Oxygen sensor before catalytic converter, fine mixture control: exhaust gas after
catalytic converter too lean

CAUSE

An actual engine related problem and/or DME software diagnostic
PROCEDURE

1. Perform the following test plan as recommended with the latest version of ISTA.
Note:

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/325... 5/6/2016

Page 2 of 4

This test plan will be revised in ISTA 3.56.0 to include the complete procedure below.
ABL_DIT_AT1214_TVD_LV1N - Oxygen sensor before catalytic converter
· Electrical system troubleshooting of oxygen sensor before catalytic converter
· Oxygen sensor heating troubleshooting
· Troubleshooting, function of oxygen sensor before catalytic converter
· Mixture control troubleshooting
· Check lines and plug connections
· Functional check of oxygen sensor heating after repair
It is important to complete all the above steps in the test plan and ensure that none of the
following may be a cause of the fault:
· Tank ventilation system
· Intake, exhaust, and crankcase breather systems tight and without any leaks – check with a
smoke tester
· Injection
· Air mass sensor (HFM)
· Ignition
· Crankshaft and camshaft sensors
· Throttle valve
2. If no faults are stored for any of the other components listed and the leak tests are
inconclusive replace the pre-catalyst oxygen sensor (only if not previously replaced).
3. Program the vehicle using ISTA/P 3.59.0 or higher
Target integration level: F0xx-16-07-501 or higher
Note that ISTA/P will automatically reprogram and code all programmable control modules that do
not have the latest software.
Always connect a BMW approved battery charger/power supply (SI B04 23 10).
For information on programming and coding with ISTA/P, refer to Centernet / Aftersales Portal /
Service / Workshop Technology / Vehicle Programming.

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/325... 5/6/2016

Page 3 of 4

IMPORTANT NOTE: Until the release of ISTA/P 3.59.0 (late June 2016), an IRAP solution is
available.
z

The vehicle is already at the most current software integration level.

z

Submit a PuMA case entitled “IRAP – N20 Fault 118602”.

WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light
Trucks or the BMW Certified Pre-Owned Program.
This repair is also covered by the terms of the Federal and/or State-specific Emissions Warranty
(dependent on the vehicle’s model year, state of registration and its inclusion on the “modelspecific” list of covered components) that applies to the BMW model(s) listed.
The BMW Certified Pre-Owned Limited Warranty applies to BMW vehicles that have and are still
within the BMW Certified Pre-Owned coverage period, but beyond Emissions Warranty coverage
that applies.
Defect Code:

10 42 31 59 00

DME Software Diagnostic Issue Only

Labor Operation:

Labor Allowance:

Description:

00 00 006

Refer to KSD2

Performing “vehicle test” (with vehicle
diagnosis system – checking faults)

Refer to KSD2

Connect an approved battery
charger/power supply(indicated in
KSD2 as “Charging battery”)

Work time (WT)

Performing vehicle diagnosis – test
module

Refer to KSD2

Programming / encoding control unit(s)

And:
61 21 528
And, as necessary:
61 00 006
And:
61 00 730

If you are using a Main labor code for another repair, use the Plus code labor operation 00 00 556
instead.
Refer to KSD2 for the corresponding flat rate unit (FRU) allowances.
Work time labor operation code 61 00 006 is not considered a Main labor operation; however, it
does require an individual punch time and an explanation on the repair order and in the claim
comments.

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/325... 5/6/2016

Page 4 of 4

Vehicle Programming and Coding
When properly functioning control modules fail to program or further initialization procedures are
needed, please claim this additional repair work under the defect code listed in this bulletin by
using the applicable KSD2 labor operations.
If other failed control modules need to be repaired before programing, or other stored faults need to
be addressed before programing to avoid a control module failure, such repair work cannot be
claimed using the above defect code.
Other Repairs
If the diagnosis and repair of these other failed control modules qualify for coverage separately,
then please submit for these repairs using the appropriate defect code and labor operations in
KSD2.
This also applies to qualifying repairs that were performed based on the results of the ISTA
diagnostics and the completion of the recommended test plan(s).
[ Copyright ©2016 BMW of North America, Inc. ]

https://www.bmwtis.net/tiscode/cgi-bin/bulletin.aspx?sie_path=/tsb/bulletins/htm_store/325... 5/6/2016