P053C

4B70 - P053C

Information saved in
DDE

Fault code
4B70 - P053C

Fault text
DDE: Heating crankcase ventilation, activation: Short
circuit to positive

Fault description
The DDE recognizes a short circuit to positive 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