4C7B

4C7B - P2063

Information saved in
DDE

Fault code
4C7B - P2063

Fault text
DDE: Reducing-agent metering valve, activation: Positive
side, short circuit to earth

Fault description
The DDE recognizes short circuit to ground error in the
output stage:
SCR metering module.

Condition for fault identification
Test condition:
The check frequency depends on the process sequence
control.
Voltage condition:
The check frequency depends on the process sequence
control.

Condition for fault memory entry
Debounce (1000 ms)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
Replace SCR metering module.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
none