P3020

2C4D - P3020

Information saved in
DME

Fault code
2C4D - P3020

Fault text
DME2: Oxygen sensor before catalytic converter, bank 2,
pump current line

Fault description
Pre-catalyst oxygen sensor, pump current cable

Condition for fault identification
Test condition:
Monitoring on disconnected pump current wire (IP);
Diagnosis conditions:
- Overrun cutoff present for at least 3 min.
- Voltage on CJ125 < 1.7 V
- Sensor heated adequately
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 2 sec.

Action in service
Check plugs/wiring harness, otherwise replace sensor

Fault effect and breakdown warning
none

Driver information
Warning light:
MIL on in 2nd DC

Service instruction
none