Manufacturer Code Charts: 118702

118702 - P2098

Information saved in
DME

Fault code
118702 - P2098

Fault text
Oxygen sensor before catalytic converter 2, fine mixture
control: exhaust gas after catalytic converter too lean

Fault description
The diagnostic function monitors persistent deviation in the
oxygen sensor behind catalytic converter.

Condition for fault identification
Test condition:
The fault is recognized when the I component of the trim
controller is greater than -4 %.
Potential problem source(s):
- Collateral fault
- Oxygen sensor 2 forward of catalytic converter defective
- Oxygen sensor 2 behind catalytic converter defective
- Defect in wiring harness to oxygen sensor 2 behind
catalytic converter
- Leak in exhaust/muffler assembly
- Defective DME
Terminal condition: Terminal 15
Voltage condition:
- None
Temperature condition:
- Engine temperature > 85 °C
Time condition:
- None
Other conditions:
- Drive at 50 - 80 km/h and moderate rpm
- No additional diagnostic fault codes logged

Condition for fault memory entry
- Pending

Action in service
- If other diagnostic fault codes are logged, repair these
faults first
- Conduct system test for interchanged oxygen sensors in
wrong mutual positions
- Check wiring harness to oxygen sensors
- Check exhaust/muffler assembly upstream from post-
catalyst oxygen sensor 2 for leaks
- Replace pre-catalyst oxygen sensor 2
- Replace post-catalyst oxygen sensor 2
- Replace DME

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