2C39

2C39 - P0133

Information saved in
DME

Fault code
2C39 - P0133

Fault text
Oxygen sensor before catalytic converter, dynamics

Fault description
O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)

Condition for fault identification
Test condition:
O2 sensor dynamic test
No fault memories
Drive at 50 - 80 km/h and at moderate engine speed.
Terminal condition: Terminal 15, engine on

Condition for fault memory entry
Reduced dynamic response from sensor

Action in service
Replace the suspect O2 sensor
If this fails to resolve the issue, inspect the wiring.

Fault effect and breakdown warning


Driver information
Warning light:
MIL ON

Service instruction
none