Friday, May 29, 2020

2010 BMW 128i Convertible (E88) L6-3.0L (N52K) P Code Charts

P2099

2C32 – P2099

Information saved in

DME

Fault code

2C32 – P2099

Fault text

Oxygen sensor before catalytic converter 2, trim control

Fault description

Post Catalyst Fuel Trim System Too Rich (Bank 2)

Condition for fault identification

Test condition:

O2 sensor trim control

No fault memories

Drive at 50 – 80 km/h and at moderate engine speed.

Terminal condition: Terminal 15, engine on

Voltage condition:

none

Condition for fault memory entry

Trim controller pegged

Action in service

This malfunction automatically triggers an active test

(collateral fault stored in the control module’s fault

memory!).

1. Read out results of active test (are other faults still stored

in the control module’s fault memory)? => Then continue at

this point!)

2. Initiate system test for reversed O2 sensors. Follow

instructions for system test.

3. If the system test fails to produce a result then

4. Visual inspection of wiring and plugs

5. Electrical check of wiring

6. Replace wiring or plugs as indicated

7. Check exhaust system forward of downstream (post-cat)

O2 sensor for leaks

8. Replace upstream (pre-cat) O2 sensor

9. Replace downstream (post-cat) O2 sensor

10. Replace control module

Fault effect and breakdown warning