P300D

138901 - P300D

Information saved in
DME

Fault code
138901 - P300D

Fault text
Radiator shutter, bottom, electrical: Short circuit to B+

Fault description
The diagnostic function monitors the wiring harness to the
radiator vent slats.

Condition for fault identification
Test condition:
The fault is recognized when a short circuit is present in the
wire to the radiator vent slats.
Potential problem source(s):
- Defect in wiring harness between radiator vent slats and
DME
- Radiator vent slat assembly is defective
Terminal condition: Terminal 15
Voltage condition:
- Onboard electrical system voltage between 9 V and 16 V
Temperature condition:
- None
Time condition:
- None
Other conditions:
- none

Condition for fault memory entry
The diagnostic fault code is logged when the fault remains
present for longer than 1 min.

Action in service
- Check wiring harness between radiator vent slats and DME
- Replace radiator vent slat assembly

Fault effect and breakdown warning
Breakdown notice:
Radiator vent slats should open automatically.
Possible apparent symptoms:
Engine overheating is possible

Driver information
Warning light:
- ECE emissions warning lamp: off
- ECE electronic engine power reduction: off
- CC message: none
- US emissions warning lamp: off
- US electronic engine power reduction: off
- CC message: none

Service instruction
None