43E3 - P0638 (DDE)

43E3 - P0638

Information saved in
DDE

Fault code
43E3 - P0638

Fault text
DDE: Throttle-valve actuator, activation: Output stage,
overtemperature

Fault description
The DDE recognizes an over-temperature fault in the output
stage:
Throttle-valve actuator.

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 (50 ms)

Action in service
Check E-Box fan/DDE cooling. If E-Box fan/DDE cooling
are OK:
Replace DDE ECU.

Fault effect and breakdown warning
The error disables regeneration in the particulate filter.

Driver information
Warning light:
MIL

Service instruction
none