P245B

485D - P245B

Information saved in
DDE

Fault code
485D - P245B

Fault text
DDE: EGR cooler, bypass valve, activation: Output stage,
overtemperature

Fault description
The DDE recognizes an over-temperature fault in the output
stage: Switch valve for EGR cooler bypass valve.

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 (220 ms)

Action in service
Inspect switch valve for EGR cooler bypass valve for short
circuits.
Check E-Box fan/DDE cooling. If E-Box fan/DDE cooling
are OK:
Replace DDE control module.

Fault effect and breakdown warning
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL

Service instruction
none