128C01

128C01 - P2415

Information saved in
DME

Fault code
128C01 - P2415

Fault text
Oxygen sensor before catalytic converter 2, installation:
sensor not connected

Fault description
The diagnostic function monitors the signal from the pre-
catalyst oxygen sensor 2 and checks its plausibility against
the current operating condition.

Condition for fault identification
Test condition:
The fault is recognized when voltage at the pre-catalyst
oxygen sensor 2 is > 4.8 V (lean) under partial or full load.
Potential problem source(s):
- Oxygen sensor not screwed in correctly
- Leak in exhaust/muffler system on engine side of oxygen
sensor
- Defect in wiring harness to oxygen sensor
Terminal condition: Terminal 15
Voltage condition:
- Electrical system voltage > 10.97 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- Engine at partial or full load

Condition for fault memory entry
This fault is logged in the control module's fault memory if
it remains present for longer than 25 sec.

Action in service
- Check oxygen sensor for correct installation
- Check exhaust/muffler system for leaks
- Check wiring harness to oxygen sensor

Fault effect and breakdown warning
Breakdown notice:
- none
Possible apparent symptoms:
- none

Driver information
Warning light:
- ECE emissions warning lamp: on
- US emissions warning lamp: on
- ECE electronic engine power reduction: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
- none