P2629

2C50 - P2629

Information saved in
DME

Fault code
2C50 - P2629

Fault text
Oxygen sensor before catalytic converter 2, calibration cable

Fault description
O2 Sensor Pumping Current Trim Circuit/Open (Bank 2
Sensor 1)

Condition for fault identification
Test condition:
Monitoring on disconnected calibration wire (IA);
Diagnosis conditions:
- Trailing-throttle overrun abort present for at least 2 sec.
- Voltage at CJ125 > 4.8 V
- O2 sensor heated to adequate temperature
- Exhaust-gas temp. (model) before cat. < 750 �C
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
Check plug / wiring harness / O2 wiring, otherwise replace
O2 sensor

Fault effect and breakdown warning


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

Service instruction
none