P053A

4B73 - P053A

Information saved in
DDE

Fault code
4B73 - P053A

Fault text
DDE: Heating crankcase ventilation, activation: Open
circuit

Fault description
The DDE recognizes a load drop error in the output stage:
Positive crankcase ventilation heater.

Condition for fault identification
none

Condition for fault memory entry
Debounce (220 ms)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
Replace crankcase ventilation heater.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none