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:
Trim control I segment (precision controller with O2 sensor
behind cat.) exceeds delta lambda threshold > 0.03; mixture
(with lambda closed-loop control) too rich
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts

Condition for fault memory entry
Fault monitoring criterion must remain present over 1 sec.

Action in service
1. Replace LSU;
2. Repair leak in exhaust system
3. Check wiring harness

Fault effect and breakdown warning


Driver information
Warning light:
MIL on (in 2nd driving cycle);

Service instruction
none