P066D

4A5F - P066D

Information saved in
DDE

Fault code
4A5F - P066D

Fault text
DDE: Glow control unit: Glow control unit, output stage,
cylinder 2, faulty

Fault description
The preheating control module detects a defective output
stage for activation of the glow plug at cyl. no. 2.

Condition for fault identification
Test condition:
The LIN message is transmitted every 500 ms.
Voltage condition:
The LIN message is transmitted every 500 ms.

Condition for fault memory entry
Debounce (1200 ms)

Action in service
Replace glow-plug preheating control module.
Replace glow plug 1.

Fault effect and breakdown warning
Poor starting at low temperatures.
Proceed to the nearest BMW Service facility.

Driver information
Warning light:
MIL

Service instruction
Remove glow plugs with engine warmed to normal
operating temperature to avoid damage to the cylinder head.