P0030

4207 - P0030

Information saved in
DDE

Fault code
4207 - P0030

Fault text
DDE: Oxygen sensor, heater activation: Open circuit

Fault description
The DDE recognizes an open-circuit error at the output
stage:
Oxygen sensor heating.

Condition for fault identification
Test condition:
The following conditions must be present for the error
check:
- The diagnostic function must be active.
- The pre-debounced battery voltage must be greater than
10700 mV.
Voltage condition:
The following conditions must be present for the error
check:
- The diagnostic function must be active.
- The pre-debounced battery voltage must be greater than
10700 mV.

Condition for fault memory entry
Debounce (2000 ms)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
Replace oxygen sensor.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none