P205D

46F4 - P205D

Information saved in
DDE

Fault code
46F4 - P205D

Fault text
DDE: Reducing-agent active-tank temperature sensor,
signal: Open or short circuit to positive

Fault description
Active tank temperature sensor monitoring. The diagnostic
trouble code is logged when the raw sensor signal (voltage)
rises above the limit 3200 mV.
The diagnostic trouble code is also logged when the
temperature sensor's resistance rises above roughly 350
kOhms.

Condition for fault identification
Test condition:
The test routine is executed only provided that no other
electrical faults are present. The error check proceeds
continuously in the programmed process grid.
Voltage condition:
The test routine is executed only provided that no other
electrical faults are present. The error check proceeds
continuously in the programmed process grid.

Condition for fault memory entry
Debounce (600 ms)

Action in service
1. Check wires and plug connections.
2. If wiring and plug connections are OK:
4. Use diagnostic module to test temperature sensor's
plausibility.
3. Replace active tank temperature sensor.

Fault effect and breakdown warning
-

Driver information
Warning light:
MIL

Service instruction
Specified active tank temperature sensor resistance: 12.3-
12.6 kOhms at 20 �C.