46E4 - P202A (DDE)

46E4 - P202A

Information saved in
DDE

Fault code
46E4 - P202A

Fault text
DDE: Reducing-agent active-tank heating, activation: Open
circuit

Fault description
The DDE recognizes an open-circuit error at the output
stage:
Active tank heating system.

Condition for fault identification
Test condition:
The error check proceeds continuously according to the
programmed process grid.
Voltage condition:
The error check proceeds continuously according to the
programmed process grid.

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:
3. Use diagnosis to activate heating systems.
4. Inspect fuse.
5. Replace power switch (relay).

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
Heater circuit 2 is for the metering wire and delivery
module.
If DTC 4C72 or 49ED is logged, this is a collateral error and
shuts down the relay. Repair this malfunction and delete
stored DTCs from the error memory.